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Office of Scientific and Technical Information
Novel Sources for Focused-ion Beams
Science Conference Proceedings (OSTI)
... production techniques. This new technique uses a variety of atomic sources to produce highly focused ion beams, with tightly controlled energy. ...
Focused Ion beam source method and Apparatus
DOE Patents (OSTI)
A focused ion beam having a cross section of submicron diameter, a high ion current, and a narrow energy range is generated from a target comprised of particle source material by laser ablation. The method involves directing a laser beam having a cross section of critical diameter onto the target, producing a cloud of laser ablated particles having unique characteristics, and extracting and focusing a charged particle beam from the laser ablated cloud. The method is especially suited for producing focused ion beams for semiconductor device analysis and modification.
Pellin, Michael J.; Lykke, Keith R.; Lill, Thorsten B.
Focused ion beam micromilling and articles therefrom
An ultrahigh vacuum focused ion beam micromilling apparatus and process are disclosed. Additionally, a durable data storage medium using the micromilling process is disclosed, the durable data storage medium capable of storing, e.g., digital or alphanumeric characters as well as graphical shapes or characters. 6 figs.
Lamartine, B.C.; Stutz, R.A.
Focused Ion Beam Milling (FIB) Information at NIST
Focused Ion Beam Milling (FIB) Information at NIST. Analysis of 3D Elemental Mapping Artifacts in Biological Specimens ...
Focused ion beam direct fabrication of micro-optical elements: features compared with laser beam and electron beam direct writing
E-Print Network (OSTI)
Three types of focused ion beam machine: focused ion beam milling (FIB milling), focused ion beam lithography (FIB lithography), and focused ion beam direct deposition (FIB deposition), are described in detail to compare ...
Fu, Yongqi
Ultrahigh vacuum focused ion beam micromill and articles therefrom
Focused ion beam induced structural modifications in thin magnetic films
SciTech Connect
Focused ion beam techniques are one way to modify locally the properties of magnetic thin films. We report on structural investigations of 50 nm thick non-ordered nano-crystalline Permalloy (Ni{sub 81}Fe{sub 19}) films modified by 30 keV Ga{sup +} focused ion beam (FIB) irradiation. From the x-ray diffraction (XRD) measurements a considerable crystallite growth and a material texturing towards (111)-direction with a linearly increasing lattice constant was observed. In addition, cross-sectional transmission electron microscope (XTEM) images show that crystallites are growing through the entire film at high irradiation fluences. Extended x-ray absorption fine structure (EXAFS) analysis shows a perfect near-order coordination corresponding to a face-centered (fcc) unit cell for both Fe, Ni and Ga atom surrounding. The structural changes are accompanied by a decrease of saturation polarization with increasing ion fluence. Such a behavior is attributed to the incorporation of non-magnetic Ga atoms in the Permalloy film.
Roshchupkina, O. D.; Grenzer, J.; Strache, T.; McCord, J.; Fritzsche, M.; Muecklich, A.; Baehtz, C.; Fassbender, J. [Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, Dresden (Germany)
Laser-Cooled Lithium Atoms: A New Source for Focused Ion Beams
Laser-Cooled Lithium Atoms: A New Source for Focused Ion Beams P R O J E C T L E A D E R : Jabez Mc E N T S Designed and constructed a laser-cooled, magneto-optical trap-based lithium ion source mounted on a commercial focused ion beam system, creating the world's first lithium ion microscope
Magee, Joseph W.
Self?aligned high electron mobility transistor gate fabrication using focused ion beams
A new gate fabrication technique has been developed based on focused ion beam exposure and reactive ion etching of a polymethylmethacrylate (PMMA)/Ge/PMMA multilevel resist structure. The focused ion beam exposes the thin PMMA imaging layer that is transferred directly to the germanium layer using reactive ion etching (RIE). The underlying resist is etched first in oxygen at high pressure
G. M. Atkinson; R. L. Kubena; L. E. Larson; L. D. Nguyen; F. P. Stratton; L. M. Jelloian; M. V. Le; H. McNulty
Novel Sources for Focused-ion Beams Laboratory
... is focused on developing novel sources of ion ... with a wide range of ionic species and beam energies. ... with the liquid metal ion source replaced by a ...
Focused Ion Beam Fabricated Non-equilibrium Superconducting Devices
high-density SNS junction arrays, dc-SQUIDs, and related devices. A simple model is devised to explain the normal-state resistance and critical current of a junction. The model is based on the geometry of a junction as defined by the FIB instrument... and phonon energy distributions....................... 37 2.6.2. Quasiparticle recombination .............................................................................. 39 2.6.3. Knock-on effects of changes in the energy distribution of quasiparticles...
Moseley, Richard William
Exploration of the ultimate patterning potential achievable with focused ion beams
In this paper, we present our work aiming to explore the nano-structuring potential of high resolution focused ion beams (FIB), a technology capable of overcoming some basic limitations of current nano-fabrication techniques and to propose new patterning ...
J. Gierak; E. Bourhis; M. N. Mérat Combes; Y. Chriqui; I. Sagnes; D. Mailly; P. Hawkes; R. Jede; L. Bruchhaus; L. Bardotti; B. Prével; A. Hannour; P. Mélinon; A. Perez; J. Ferré; J. -P. Jamet; A. Mougin; C. Chappert; V. Mathet
In situ nanomechanical testing in focused ion beam and scanning electron microscopes
The recent interest in size-dependent deformation of micro- and nanoscale materials has paralleled both technological miniaturization and advancements in imaging and small-scale mechanical testing methods. Here we describe a quantitative in situ nanomechanical testing approach adapted to a dual-beam focused ion beam and scanning electron microscope. A transducer based on a three-plate capacitor system is used for high-fidelity force and displacement measurements. Specimen manipulation, transfer, and alignment are performed using a manipulator, independently controlled positioners, and the focused ion beam. Gripping of specimens is achieved using electron-beam assisted Pt-organic deposition. Local strain measurements are obtained using digital image correlation of electron images taken during testing. Examples showing results for tensile testing of single-crystalline metallic nanowires and compression of nanoporous Au pillars will be presented in the context of size effects on mechanical behavior and highlight some of the challenges of conducting nanomechanical testing in vacuum environments.
Gianola, D. S. [Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States); Institute for Applied Materials, Karlsruhe Institute of Technology, Karlsruhe (Germany); Sedlmayr, A.; Moenig, R.; Kraft, O. [Institute for Applied Materials, Karlsruhe Institute of Technology, Karlsruhe (Germany); Volkert, C. A. [Institute for Materials Physics, Georg-August University of Goettingen, Goettingen (Germany); Major, R. C.; Cyrankowski, E.; Asif, S. A. S.; Warren, O. L. [Hysitron, Inc., Minneapolis, Minnesota 55344 (United States)
Mini RF-driven ion source for focused ion beam system
DOE Green Energy (OSTI)
Mini RF-driven ion sources with 1.2 cm and 1.5 cm inner chamber diameter have been developed at Lawrence Berkeley National Laboratory. Several gas species have been tested including argon, krypton and hydrogen. These mini ion sources operate in inductively coupled mode and are capable of generating high current density ion beams at tens of watts. Since the plasma potential is relatively low in the plasma chamber, these mini ion sources can function reliably without any perceptible sputtering damage. The mini RF-driven ion sources will be combined with electrostatic focusing columns, and are capable of producing nano focused ion beams for micro machining and semiconductor fabrications.
Jiang, X.; Ji, Q.; Chang, A.; Leung, K.N.
Micromilling of Metal Alloys with Focused Ion Beam-Fabricated Tools
This work combines focused ion beam sputtering and ultra-precision machining as a first step in fabricating microstructure in metals and alloys. Specifically, {approx}25{micro}m diameter micro-end mills are made from cobalt M42 high-speed steel and C2 micrograin tungsten carbide tool blanks by ion beam sputtering. A 20 keV focused gallium beam defines tool cutting edges having radii of curvature < 0.1{micro}m. Micro-end mills having 2, 4 and 5 cutting edges successfully machine small trenches in 6061-T4 aluminum, brass, 4340 steel and polymethyl methacrylate. Machined trench widths are approximately equal to the tool diameters and surface roughnesses (rms) are {approx}150 nm or less. Microtools are robust and operate for more than 6 hours without fracture. Results from ultra-precision machining aluminum at feed rates as high as 50 mm/minute are included.
Investigation of aspect ratio of hole drilling from micro to nanoscale via focused ion beam fine milling
Holes with different sizes from microscale to nanoscale were directly fabricated by focused ion beam (FIB) milling in this paper. Maximum aspect ratio of the fabricated holes can be 5:1 for the hole with large size with ...
Assessment of Failure Mechanisms for Thermal Barrier Coatings by Photoluminescence, Electrochemical Impedance and Focused Ion Beam
NLE Websites -- All DOE Office Websites (Extended Search)
H. Sohn, B. Jayaraj and V.H. Desai H. Sohn, B. Jayaraj and V.H. Desai SCIES Project 02- 01- SR103 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (May 1, 2002, 36 Month Duration) $249,766 Total Contract Value ($208,228 DOE UTSR) Assessment of Failure Mechanisms for Thermal Barrier Coatings by Photoluminescence, Electrochemical Impedance and Focused Ion Beam YHS@UCF,10/17/05 Gas Turbine Needs: Reliable and Durable Thermal Barrier Coatings (TBCs) TBCs Provide Thermal Protection of Hot Components in Advanced Gas Turbine Engines Increase in Performance, Efficiency, Reliability and Maintainability. Reduction Life Cycle Costs. Reliable and Durable TBCs Needed as An Integral Part of Component Design.
Focused ion beam assisted three-dimensional rock imaging at submicron scale
Computation of effective flow properties of fluids in porous media based on three dimensional (3D) pore structure information has become more successful in the last few years, due to both improvements in the input data and the network models. Computed X-ray microtomography has been successful in 3D pore imaging at micron scale, which is adequate for many sandstones. For other rocks of economic interest, such as chalk and diatomite, submicron resolution is needed in order to resolve the 3D-pore structure. To achieve submicron resolution, a new method of sample serial sectioning and imaging using Focused Ion Beam (FIB) technology has been developed and 3D pore images of the pore system for diatomite and chalk have been obtained. FIB was used in the milling of layers as wide as 50 micrometers and as thin as 100 nanometers by sputtering of atoms from the sample surface. The focused ion beam, consisting of gallium ions (Ga+) accelerated by potentials of up to 30 kV and currents up to 20,000 pA, yields very clean, flat surfaces in which the pore-grain boundaries appear in high contrast. No distortion of the pore boundaries due to the ion milling is apparent. After each milling step, as a new surface is exposed, an image of the surface is generated. Using secondary electrons or ions, resolutions as high as 10 nm can be obtained. Afterwards, the series of 2D images can be stacked in the computer and, using appropriate interpolation and surface rendering algorithms, the 3D pore structure is reconstructed.
Tomutsa, Liviu; Radmilovic, Velimir
Plasma focus ion beam fluence and flux-Scaling with stored energy
Measurements on plasma focus ion beams include various advanced techniques producing a variety of data which has yet to produce benchmark numbers [A Bernard et al., J. Mosc. Phys. Soc. 8, 93-170 (1998)]. This present paper uses the Lee Model code [S Lee, http://www.plasmafocus.net (2012)], integrated with experimental measurements to provide the basis for reference numbers and the scaling of deuteron beams versus stored energy E{sub 0}. The ion number fluence (ions m{sup -2}) and energy fluence (J m{sup -2}) computed as 2.4-7.8 Multiplication-Sign 10{sup 20} and 2.2-33 Multiplication-Sign 10{sup 6}, respectively, are found to be independent of E{sub 0} from 0.4 to 486 kJ. Typical inductance machines (33-55 nH) produce 1.2-2 Multiplication-Sign 10{sup 15} ions per kJ carrying 1.3%-4% E{sub 0} at mean ion energy 50-205 keV, dropping to 0.6 Multiplication-Sign 10{sup 15} ions per kJ carrying 0.7% E{sub 0} for the high inductance INTI PF.
Lee, S. [INTI International University, 71800 Nilai (Malaysia); Institute for Plasma Focus Studies, 32 Oakpark Drive, Chadstone 3148 (Australia); Physics Department, University of Malaya, Kuala Lumpur (Malaysia); Saw, S. H. [INTI International University, 71800 Nilai (Malaysia); Institute for Plasma Focus Studies, 32 Oakpark Drive, Chadstone 3148 (Australia)
Focused ion beam patterned Fe thin films A study by selective area Stokes polarimetry and soft x-Ray microscopy
We demonstrate the potential to modify the magnetic behavior and structural properties of ferromagnetic thin films using focused ion beam 'direct-write' lithography. Patterns inspired by the split-ring resonators often used as components in meta-materials were defined upon 15 nm Fe films using a 30 keV Ga{sup +} focused ion beam at a dose of 2 x 10{sup 16} ions cm{sup -2}. Structural, chemical and magnetic changes to the Fe were studied using transmission soft X-ray microscopy at the ALS, Berkeley CA. X-ray absorption spectra showed a 23% reduction in the thickness of the film in the Ga irradiated areas, but no chemical change to the Fe was evident. X-ray images of the magnetic reversal process show domain wall pinning around the implanted areas, resulting in an overall increase in the coercivity of the film. Transmission electron microscopy showed significant grain growth in the implanted regions.
Cook, P. J.; Shen, T. H.; Grundy, P. J.; Im, M.-Y.; Fischer, P.; Morton, S. A.; Kilcoyne, A. L. D.
Laboratory high energy density experiments using ion beam drivers rely upon the delivery of high-current, high-brightness ion beams with high peak intensity onto targets. Solid-state scintillators are typically used to measure the ion beam spatial profile but they display dose-dependent degradation and aging effects. These effects produce uncertainties and limit the accuracy of measuring peak beam intensities delivered to the target. For beam tuning and characterizing the incident beam intensity, we have developed a cross-calibrating diagnostic suite that extends the upper limit of measurable peak intensity dynamic range. Absolute intensity calibration is obtained with a 3 {micro}m thick tungsten foil calorimeter and streak spectrometer. We present experimental evidence for peak intensity measures in excess of 400 kW/cm{sup 2} using a 0.3 MV, 25 mA, 5-20 {micro}sec K{sup +1} beam. Radiative models and thermal diffusion effects are discussed because they affect temporal and spatial resolution of beam intensity profiles.
Lidia, S.M.; Bieniosek, F.; Henestroza, E.; Ni, P.; Seidl, P.
Simultaneous Formation of Surface Ripples and Metallic Nanodots Induced by Phase Decomposition and Focused Ion Beam Patterning
We report the simultaneous formation of self-assembled surface ripples in Cd{sub 2}Nb{sub 2}O{sub 7} pyrochlore caused by focused ion beam (FIB) patterning and uniformly distributed metallic nanodots induced by phase decomposition under ion bombardment. The characteristic wavelength of the surface ripples is controllable from the nm to the sub-{micro}m scale. High-density Cd metallic nanoparticles, {approx} 5 nm, formed and the distribution of nanoparticles is consistent with the morphological characteristics of the ripple pattern. This approach provides a means of fabricating surface nanostructure with various patterns and a controllable particle size and distribution by combining ion beam-induced phase decomposition with high-precision FIB patterning.
Lian, Jie [University of Michigan; Zhou, Wei [Nanyang Technological University; Wei, Q.M. [University of Michigan; Wang, L. M. [University of Michigan; Boatner, Lynn A [ORNL; Ewing, Rodney C. [University of Michigan
Creation of stable nanoconstrictions in metallic thin films via progressive narrowing by focused-ion-beam technique and in situ control of resistance
This work describes the use of focused-ion-beam for the fabrication of metallic nanoconstrictions on a Fe thin film with in situ monitoring of the structure's resistance. With this approach the sequential FIB steps that are used for the gradual narrowing ... Keywords: Conductance quantum G0, FIB patterning, Magnetoresistive thin films, Nanoconstriction
J. Vincenc Obo?a; J. M. de Teresa; R. Córdoba; A. Fernández-Pacheco; M. R. Ibarra
1996 Beam Instrumentation Workshop
1996 Beam Instrumentation Workshop BIW '96 logo The Advanced Photon Source (APS) Argonne National Laboratory May 6-9, 1996 Dear Colleague: It is my pleasure to invite you to the...
Challenges in Accelerator Beam Instrumentation
The challenges in beam instrumentation and diagnostics for present and future particle accelerator projects are presented. A few examples for advanced hadron and lepton beam diagnostics are given.
Wendt, M
Wendt, M.
Microfabrication of controlled-geometry samples for the laser-heated diamond-anvil cell using focused ion beam technology
The pioneering of x-ray diffraction with in situ laser heating in the diamond-anvil cell has revolutionized the field of high-pressure mineral physics, expanding the ability to determine high-pressure, high-temperature phase boundaries and equations of state. Accurate determination of high-pressure, high-temperature phases and densities in the diamond-anvil cell rely upon collinearity of the x-ray beam with the center of the laser-heated spot. We present the development of microfabricated samples that, by nature of their design, will have the sample of interest in the hottest portion of the sample. We report initial successes with a simplified design using a Pt sample with dimensions smaller than the synchrotron-based x-ray spot such that it is the only part of the sample that absorbs the heating laser ensuring that the x-rayed volume is at the peak hotspot temperature. Microfabricated samples, synthesized using methods developed at The Ohio State University's Mineral Physics Laboratory and Campus Electron Optics Facility, were tested at high P-T conditions in the laser-heated diamond-anvil cell at beamline 16 ID-B of the Advanced Photon Source. Pt layer thicknesses of {le} 0.8 {micro}m absorb the laser and produce accurate measurements on the relative equations of state of Pt and PtC. These methods combined with high-purity nanofabrication techniques will allow for extension by the diamond-anvil cell community to multiple materials for high-precision high-pressure, high-temperature phase relations, equations of state, melting curves, and transport properties.
Pigott, Jeffrey S.; Reaman, Daniel M.; Panero, Wendy R. (OSU)
Nanofabrication using focused ion beam
Deposition 47 3.2.3 Photolithography 48 3.2.4 Al Dissolution, Advanced Scanning Electron Microscope Specimen Preparation and Other Methods 50 126.96.36.199 Al Dissolution 50 18.104.22.168 Advanced Scanning Electron Microscope Specimen Preparation 51 3... . Measurements performed included in-situ resistometric measurements, which provided milled depth information by monitoring the resistance change of a metal track while ion milling it. The reproducibly of this method was confirmed by repeating experiments...
Latif, Adnan
Focused Ion Beam (Helios 650)
... The HNL650 is also equipped with retractable STEM detector, cryo stage, nano manipulator and multiple gas injection systems. ...
Focused Ion Beam/Dual Beam
... It can be used for TEM sample preparation; 3D Slice and View imaging, elemental, and phase analysis; nano-fabrication using electron and ion ...
New beam instrumentation in the AGS Booster
The AGS Booster was designed to accelerate beams from 2{times}10{sup 10} polarized protons to 1.5{times}10{sup 13} protons and heavy ions through Au{sup +33}. The range of beam parameters and the high vacuum, and radiation environment presented challenges for the beam instrumentation. Some interesting beam monitors in the Booster and transport lines, will be described. Where available, results will be presented. 21 refs., 7 figs.
Witkover, R.L.
Beam instrumentation for the SSC RFQ
A detailed description of the SSC RFQ beam instrumentation is presented. Most of the instrumentation is located in the RFQ end walls. The upstream end wall contains a segmented Faraday cup, a segmented aperture and a wire scanner. The down stream end wall contains a segmented aperture and wire scanner. Two current toroids are used to measure the transmission through the RFQ. The output of the RFQ is a low emittance, pulsed 2.5 Mev H{sup {minus}} beam with peak current of 25 mA and maximum pulse length of 35 {mu}s. Typical beam data are shown with the emphasis being on instrumentation performance.
Datte, P.; Jamieson, G.; Aiello, R.; Beechy, D.; Jones, A.; Martin, D.; Riordon, J.; Webber, R.; Wood, F.
Zeiss NVision Focused Ion Beam Users Manual
... magnification. Follow up by focusing the image, using knob (11) on the Hard Panel to image and orient the sample 12. ...
Focused Ion Beam Nanofabrication and Characterization
... materials characterization, nanoprototyping, in-situ electrical measurement, TEM ... the-art research in Nanotechnology, Materials and Life Sciences. ...
SNS Instrument System Beam Lines | ORNL Neutron Sciences
SNS Instrument Beam Lines SNS Instrument Beam Lines This diagram shows the beam lines designated for currently funded instruments. Clicking on an instrument description will take you to the page for that instrument. Clicking anywhere else on the image will open a full-size, printable PDF file. SNS Instrument Layout Backscattering Spectrometer (BASIS) Disordered Materials Diffractometer (NOMAD) Wide Angular-Range Chopper Spectrometer (ARCS) Fine-Resolution Fermi Chopper Spectrometer (SEQUOIA) Coming Soon - Vibrational Spectrometer (VISION) Neutron Spin Echo (NSE) Hybrid Spectrometer (HYSPEC) Fundamental Neutron Physics Beamline (FNPB) Single Crystal Diffractometer (TOPAZ) Versatile Neutron Imaging Instrument (VENUS) Macromolecular Diffractometer (MaNDi) Powder Diffractometer (POWGEN3) Engineering Diffractometer (VULCAN) Extended Q-Range Small Angle Neutron Diffractometer (EQ-SANS) Cold Neutron Chopper Spectrometer (CNCS) Liquids (horizontal surface) Reflectometer (LR) Magnetic Advanced Grazing InCidence Spectrometer (MAGICS) High Pressure Diffractometer (SNAP) Coming Soon - Elastic Diffuse Scattering Spectrometer (CORELLI)
Tuning the beam: a physics perspective on beam diagnostic instrumentation
In a nutshell, the role of a beam diagnostic measurement is to provide information needed to get a particle beam from Point A (injection point) to Point B (a target) in a useable condition, with 'useable' meaning the right energy and size and with acceptable losses. Specifications and performance requirements of diagnostics are based on the physics of the particle beam to be measured, with typical customers of beam parameter measurements being the accelerator operators and accelerator physicists. This tutorial will be a physics-oriented discussion of the interplay between tuning evolutions and the beam diagnostics systems that support the machine tune. This will include the differences between developing a tune and maintaining a tune, among other things. Practical longitudinal and transverse tuning issues and techniques from a variety of proton and electron machines will also be discussed.
Gulley, Mark S [Los Alamos National Laboratory
Beam instrumentation for an ISOL test stand
TRIUMF is constructing a test bed for the first stages of the proposed TISAC accelerated radioactive beam facility. The authors will present the requirements for the diagnostic system for this test stand and describe the design and development work underway. Scintillators, beamstops and a Faraday Cup have been tested using stable, mass analyzed, 12 keV beams of ions from mass 14 to 132. The design of a linear drive, with 10 {micro}m resolution, for scanning wires and slits has begun.
Mackenzie, G.H.; Dombsky, M.; Rawnsley, W.; Stanford, G.; Yin, Y. [TRIUMF, Vancouver, British Columbia (Canada); Novikov, A. [INR, Moscow (Russian Federation)
A M MEASUREMENTS AND NEW INSTRUMENTATION A T T H E ADVANCEDbeamlines and o f the instrumentation and beam diagnosticbeam diagnostics and instrumentation have followed a similar
Sannibale, Fernando
RF and Beam Diagnostic Instrumentation at the Advanced Photon Source (APS) Linear Accelerator (Linac)
Grelick, A E; Arnold, N; White, M
Beam instrumentation for the BNL Heavy Ion Transfer Line
The Heavy Ion Transfer Line (HITL) was constructed to transport beams from the BNL Tandem Van de Graaff (TVDG) to be injected into the AGS. Because the beam line is approximately 2000 feet long and the particle rigidity is so low, 20 beam monitor boxes were placed along the line. The intensity ranges from 1 to 100 nanoAmps for the dc trace beam used for line set-up, to over 100 ..mu..A for the pulsed beam to be injected into the AGS. Profiles are measured using multiwire arrays (HARPS) while Faraday cups and beam transformers monitor the intensity. The electronics stations are operated through 3 Instrumentation Controllers networked to Apollo workstations in the TVDG and AGS control rooms. Details of the detectors and electronics designs and performance will be given.
Witkover, R.L.; Buxton, W.; Castillo, V.; Feigenbaum, I.; Lazos, A.; Li, Z.G.; Smith, G.; Stoehr, R.
Heterogeneous Patterning by Focus Ion Beam Assisted Anodization
Author(s), Kathy Lu, Li Jiang, Jingzhong Zhao ... Agricultural-Waste Biomass for Hydrogen Adsorption via Nano-Particle Synthesis and Spark-Plasma Sintering.
I9, Micromagnetic Simulation of Focused Ion Beam Patterned Cobalt ...
L6, PECVD-SiN, Si or Si/Al2O3-Capped ED-Mode AlN/GaN Inverters · Hide details for [
CG-1: The Instrument Development Beam Line at HFIR | ORNL Neutron...
Instrument Development Beam Line at HFIR Four instrument development beam lines are in varying stages of development or completion at the Cold Guide 1 (CG-1) position at HFIR. CG1...
Instrumentation system for long-pulse MFTF neutral beams
The instrumentation system for long pulse neutral beams for MFTFS consists of monitoring and protective circuitry. Global synchronization of high speed monitoring data across twenty-four neutral beams is achieved via an experiment wide fiber optic timing system. Fiber optics are also used as a means of isolating signals at elevated voltages. An excess current monitor, interrupt monitor, sparkdown detector, spot detector and gradient grid ratio detector form the primary protection for the neutral beam source. A unique hierarchical interlocking scheme allows other protective devices to be factored into the shutdown circuitry of the power supply so that the initiating cause of a shutdown can be isolated and even allows some non-critical devices to be safely ignored for a period of time.
Risch, D.M.
Fiberoptics-Based Instrumentation for Storage Ring BeamDiagnostics
In several cases, coupling synchrotron light into opticalfibers can substantially facilitate the use of beam diagnosticinstrumentation, that measures longitudinal beam properties by detectingsynchrotron radiation. It has been discussed in [1]with some detail, howfiberoptics can bring the light at relatively large distances from theaccelerator, where a variety of devices can be used to measure beamproperties and parameters. Light carried on a fiber can be easilyswitched between instruments so that each one of them has 100 percent ofthe photons available, rather than just a fraction , when simultaneousmeasurements are not indispensable. From a more general point of view,once synchrotron light is coupled into the fiber, the vast array oftechniques and optoelectronic devices, developed by the telecommunicationindustry becomes available.In this paper we present the results of ourexperiments at the Advanced Light Source, where we tried to assess thechallenges and limitations of the coupling process and determine whatlevel of efficiency one can typically expect to achieve.
Byrd, John M.; De Santis, Stefano; Yin, Yan
Fiberoptics-Based Instrumentation for Storage Ring Beam Diagnostics
FIBEROPTICS-BASED INSTRUMENTATION FOR STORAGE RING BEAMbeam diagnostic instrumentation that measures longitudinalet al. , "Fiberoptics-based Instrumentation for Storage Ring
Instruments Instruments Available to Users CISA 5500XL SOLiD Sequencers Electron Microscope: Dual FIB/SEM (FEI Helios) Electron Microscope: Transmission, CRYO 2005 Flow Cytometer: Influx Laser Capture Microdissection Mammalian Cell Culture Microbial Bioreactors Microscope: Confocal, Multi-Photon/FLIM Integrated Microscope: Fluorescence, Confocal, Real-Time Microscope: Fluorescence, Single-Molecule Microscope: Fluorescence, Single-Molecule / Patch Clamp Microscope: Fluorescence, Super Resolution STORM Microscope: Helium Ion Microscope: Scanning Probe - AFM Compound DepoSItIon AnD MICrofAbrICAtIon Deposition: Hybrid Thin Film Deposition System Deposition: Molecular Beam Epitaxy #1 Deposition: Pulsed Laser Deposition System Electron Microscope: Dual FIB/SEM (FEI
HFIR Instrument System Beam Lines | ORNL Neutron Sciences
Clicking anywhere else on the image will open a full-size, printable PDF file. HFIR Instrument Layout HB-1A Ames Lab Triple-Axis Spectrometer CG-2 SANS CG-3 BioSANS CG-4C...
Recent improvements to the DIII-D neutral beam instrumentation and control system
The DIII-D neutral beam (NB) instrumentation and control (I and C) system provides for operational control and synchronization of the eight DIII-D neutral beam injection systems, as well as for pertinent data acquisition and safety interlocking. Recently, improvements were made to the I and C system. With the replacement of the NB control computers, new signal interfacing was required to accommodate the elimination of physical operator panels, in favor of graphical user interface control pages on computer terminal screens. The program in the mode control (MC) programmable logic controller (PLC), which serves as a logic-processing interface between the NB control computers and system hardware, was modified to improve the availability of NB heating of DIII-D plasmas in the event that one or more individual beam systems suddenly become unavailable while preparing for a tokamak experimental shot sequences. An upgraded computer platform was adopted for the NB control system operator interface and new graphical user interface pages were developed to more efficiently display system status data. A failure mode of the armor tile infrared thermometers (pyrometers), which serve to terminate beam pulsing if beam shine-through overheats wall thermal shielding inside the DIII-D tokamak, was characterized such that impending failures can be detected and repairs effected to mitigate beam system down-time. The hardware that controls gas flow to the beamline neutralizer cells was upgraded to reduce susceptibility to electromagnetic interference (EMI), and interlocking was provided to terminate beam pulsing in the event of insufficient neutralizer gas flow. Motivation, implementation, and results of these improvements are presented.
Kellman, D.H.; Hong, R.
Instruments. A, B, C, D, E, F, G, H. 1, Time (s), T (deg C), Rel Humidity (%), Ion chamber 1 (volts), Ion chamber 2 (volts), Mass conc. ...
Recent Beam Measurements and New Instrumentation at the Advanced Light Source
The Advanced Light Source (ALS) in Berkeley was the first of the soft x-ray third generation light source ever built, and since 1993 has been in continuous and successful operation serving a large community of users in the VUV and soft x-ray community. During these years the storage ring underwent through several important upgrades that allowed maintaining the performance of this veteran facility at the forefront. The ALS beam diagnostics and instrumentation have followed a similar path of innovation and upgrade and nowadays include most of the modem and last generation devices and technologies that are commercially available and used in the recently constructed third generation light sources. In this paper we will not focus on such already widely known systems, but we will concentrate our effort in the description of some measurements techniques, instrumentation and diagnostic systems specifically developed at the ALS and used during the last few years.
Sannibale, F.; Baptiste, K.; Barry, W.; Chin, M.; /LBL, Berkeley; Filippetto, D.; /Frascati; Jaegerhofer, L.; /Vienna, Tech. U.; Julian, J.; Kwiatkowski, S.; Low, R.; Plate, D.; Portmann, G.; Robin, D.; Scarvie, T.; /LBL, Berkeley; Stupakov, G.; /SLAC; Weber, J.; Zolotorev, M.; /LBL, Berkeley
Sannibale, Fernando; Baptiste, Kenneth; Barry, Walter; Chin, Michael; Filippetto, Daniele; Jaegerhofer, Lukas; Julian, James; Kwiatkowski, Slawomir; Low, Raymond; Plate, David; Portmann, Gregory; Robin, David; Scarvie, Tomas; Stupakov, Gennady; Weber, Jonah; Zolotorev, Max
Meeting Info for Focused ION Beam (FIB): Thursday, October 21, 2010
for Ceramic Research Building) Invited/Attendees: Adrian Mann, Leonard Feldman, Torgny Gustafsson, Eric the possibly of either working with industry to develop the next generation of FIB technology or acquiring
Garfunkel, Eric
Focused Ion Beam Production Using a Pyroelectric Crystal and a Resistive Glass Tube
connection to the linear motion system. The walls of the vacuum chamber were stainless steel and electrically. on Application of Accelerators in Research and Industry, AIP Conf. Proc. vol. 1099, pp. 870-873, 2009. [11] D. J in Research and Industry, AIP Conf. Proc. vol. 1099, pp. 610-613, 2009. [13] J. D. Brownridge, and S. M
Danon, Yaron
Plasma ion sources and ion beam technology in microfabrications
and focused ion beam milling cathodic Nanotechnology" 16 (of FIB imaging, milling and deposition………………….45 188.8.131.52. Milling………………………………………………………………..5 188.8.131.52.
Ji, Lili
A 52 quadrupole-magnet FODO lattice has been assembled and operated at the Los Alamos National Laboratory. The purpose of this lattice is to provide a platform to measure the resulting beam halo as the first few magnets of the lattice produce various mismatch conditions. These data are then compared with particle simulation so that halo formation mechanisms may be better understood. The lattice is appended to the LEDA 6.7-MeV radio frequency quadrupole (RFQ) and is followed by a short high-energy beam transport (HEBT) that safely dumps the beam into a 670-kW beam stop.
Gilpatrick, J. D. (John Douglas); Barr, D. S. (Dean S.); Colestock, P. L. (Patrick L.),; Day, L. A. (Lisa A.); Sellyey, W. C. (William C.); Shurter, R. B. (Robert B.); Stettler, M. W. (Matthew W.); Valdiviez, R. (Robert); Gruchalla, M. (Michael); O'Hara, J. F. (James F.); Schulze, M. E. (Martin E.); Barr, D. S. (Dean S.)
Ion Beam Modification of Materials
This volume contains the proceedings of the 14th International Conference on Ion Beam Modification of Materials, IBMM 2004, and is published by Elsevier-Science Publishers as a special issue of Nuclear Instruments and Methods B. The conference series is the major international forum to present and discuss recent research results and future directions in the field of ion beam modification, synthesis and characterization of materials. The first conference in the series was held in Budapest, Hungary, 1978, and subsequent conferences were held every two years at locations around the Globe, most recently in Japan, Brazil, and the Netherlands. The series brings together physicists, materials scientists, and ion beam specialists from all over the world. The official conference language is English. IBMM 2004 was held on September 5-10, 2004. The focus was on materials science involving both basic ion-solid interaction processes and property changes occurring either during or subsequent to ion bombardment and ion beam processing in relation to materials and device applications. Areas of research included Nanostructures, Multiscale Modeling, Patterning of Surfaces, Focused Ion Beams, Defects in Semiconductors, Insulators and Metals, Cluster Beams, Radiation Effects in Materials, Photonic Devices, Ion Implantation, Ion Beams in Biology and Medicine including New Materials, Imaging, and Treatment.
Averback, B; de la Rubia, T D; Felter, T E; Hamza, A V; Rehn, L E
Instrumentation and Beam Dynamics Study of Advanced Electron-Photon Facility in Indiana University
The Advanced eLectron-PHoton fAcility (ALPHA) is a compact electron accelerator under construction and being commissioned at the Indiana University Center for Exploration of Energy and Matter (CEEM). In this thesis, we have studied the refurbished Cooler Injector Synchrotron (CIS) RF cavity using both the transmission line model and SUPERFISH simulation. Both low power and high power RF measurements have been carried out to characterize the cavity. Considering the performance limit of ferrite, we have designed a new ferrite loaded, co-axial quarter wave like cavity with similar structure but a more suitable ferrite material. We have also designed a traveling wave stripline kicker for fast extraction by POISSON and Microwave Studio. The strips geometry is trimmed to maximize the uniformity of the kicking field and match the impedance of the power cables. The time response simulation shows the kicker is fast enough for machine operation. The pulsed power supply requirement has also been specified. For the beam diagnosis in the longitudinal direction, we use a wideband Wall Gap Monitor (WGM) served in CIS. With proper shielding and amplification to get good WGM signal, we have characterized the injected and extracted beam signal in single pass commissioning, and also verified the debunching effect of the ALPHA storage ring. A modulation-demodulation signal processing method is developed to measure the current and longitudinal profile of injected beam. By scanning the dipole strength in the injection line, we have reconstructed the tomography of the longitudinal phase space of the LINAC beam. In the accumulation mode, ALPHA will be operated under a low energy and high current condition, where intra beam scattering (IBS) becomes a dominant effect on the beam emittance. A self consistent simulation, including IBS effect, gas scattering and linear coupling, has been carried out to calculate the emittance of the stored beam.
Luo, Tianhuan; /Indiana U.
Ion Beam Preparation of Li-Ion Battery Electrodes Li-Ion
One key factor to producing such batteries is the electrode architecture. In order to tune the morphologies of Li-ion battery electrodes, a dual beam Focused Ion ...
Nanostructure fabrication by electron and ion beam patterning of nanoparticles
Two modes of energetic beam-mediated fabrication have been investigated, namely focused ion beam (FIB) direct-writing of nanoparticles, and a technique for electrostatically patterning ionized inorganic nanoparticles, ...
Kong, David Sun, 1979-
ORNL Neutron Sciences Instruments
Instruments banner Instruments banner ORNL Neutron Sciences Instruments SNS and HFIR provide researchers with two complementary world-class suites of neutron scattering instruments and beam lines. All the instruments are supported by a variety of sample environments and data analysis and visualization capabilities. Before submitting a proposal for a specific instrument, please contact the appropriate instrument scientist to make sure your research is feasible for that instrument. Instruments Currently Available to Users SNS Beam Line Instrument Name HFIR Beam Line Instrument Name 1B NOMAD Nanoscale-Ordered Materials Diffractometer CG-1 Development Beam Line 2 BASIS Backscattering Spectrometer CG-1D IMAGING Neutron Imaging Prototype Facility 3 SNAP Spallation Neutrons and Pressure Diffractometer CG-2 GP-SANS
2004 Beam Instrumentation Workshop
Submission Paper Submission Program -Presentations are now linked to the program Tour of SNS Banquet Activities and Events Exhibitor Information Exhibitors Poster Instructions...
Remote Synchrotron Light Instrumentation Using Optical Fibers
et al. , "Fiberoptics-based Instrumentation for Storage RingSYNCHROTRON LIGHT INSTRUMENTATION USING OPTICAL FIBERS * S.beam diagnostic instrumentation that measures longitudinal
De Santis, S.
Ion Beam Manufacture of Microscale Ion Beam Manufacture of Microscale Tools and Components Manufacturing Technologies Sandia Manufacturing Science &Technology's Focused Ion Beam (FIB) laboratory provides an opportunity for research, development and prototyping. Currently, our scientists are devel- oping methods for ion beam sculpting microscale tools, components and devices. This includes shaping of specialty tools such as end-mills, turning tools and indenters. Many of these have been used in ultra-precision machining DOE applications. Additionally, staff are developing the capability to ion mill geo- metrically-complex features and substrates. This includes the ability to sputter predeter- mined curved shapes of various symmetries and periodicities. Capabilities and Expertise * Two custom-built focused ion beam sys-
Focused helium ion beam milling and deposition
The use of a helium ion microscope with an integrated gas injection system for nanofabrication is explored by demonstrating the milling of fine features into single layered graphene and the controlled deposition of tungsten and platinum wires from gaseous ... Keywords: Beam-induced deposition, Focused ion beam, Gas injection system, Graphene, Helium ion microscope
S. A. Boden; Z. Moktadir; D. M. Bagnall; H. Mizuta; H. N. Rutt
Data Collection Computers Instrument Control Program (ICP)
... once whenever a controller is connected to the instrument. ... used at the polarized beam instruments each have ... do not operate the controls by hand. ...
ARM - Instrument -
list contains a mix of naming conventions-individual instruments versus instruments suites. Please see the instrument handbooks for a list of sensors in the instrument suites....
High resolution and high density ion beam lithography employing HSQ resist
In the early stages of focused ion beam (FIB) development, ion beam lithography (IBL) employing organic resists showed potential advantages over electron beam lithography (EBL) (most notably less proximity effects and higher sensitivity [1,2]). However, ... Keywords: FIB, HSQ, IBL, LMIS, Nano patterning, Resist
L. Bruchhaus; S. Bauerdick; L. Peto; U. Barth; A. Rudzinski; J. Mussmann; J. Klingfus; J. Gierak; H. HöVel
Ion beam processing of advanced electronic materials
This report contains research programs discussed at the materials research society symposia on ion beam processing of advanced electronic materials. Major topics include: shallow implantation and solid-phase epitaxy; damage effects; focused ion beams; MeV implantation; high-dose implantation; implantation in III-V materials and multilayers; and implantation in electronic materials. Individual projects are processed separately for the data bases. (CBS)
Cheung, N.W.; Marwick, A.D.; Roberto, J.B. (eds.) (California Univ., Berkeley, CA (USA); International Business Machines Corp., Yorktown Heights, NY (USA). Thomas J. Watson Research Center; Oak Ridge National Lab., TN (USA))
Hanford Atomic Production Operation specification guides for instruments, radiation detection instruments, instrumentation, thermocouples, orifices, process control instruments, and electronic design are presented. Details of this manual are given in TID-4100(Suppl.). (N.W.R.)
Nuclear Instruments and Methods in Physics Research A 562 (2006) 401406 Generating a multi-line neutron beam using an electron
. Glasstone, Nuclear Reactor Theory, Robert E. Krieger Publishing Company (1970). [17] W.E. Lamb, Phys. Rev with the steady-state filtered neutron beams obtained using nuclear reactors [1Â4]. The filter materials used in conjuc- tion with nuclear reactors are scandium (producing 2.03 keV neutron beams with a width DE$1:3 ke
An ice lithography instrument
We describe the design of an instrument that can fully implement a new nanopatterning method called ice lithography, where ice is used as the resist. Water vapor is introduced into a scanning electron microscope (SEM) vacuum chamber above a sample cooled down to 110 K. The vapor condenses, covering the sample with an amorphous layer of ice. To form a lift-off mask, ice is removed by the SEM electron beam (e-beam) guided by an e-beam lithography system. Without breaking vacuum, the sample with the ice mask is then transferred into a metal deposition chamber where metals are deposited by sputtering. The cold sample is then unloaded from the vacuum system and immersed in isopropanol at room temperature. As the ice melts, metal deposited on the ice disperses while the metals deposited on the sample where the ice had been removed by the e-beam remains. The instrument combines a high beam-current thermal field emission SEM fitted with an e-beam lithography system, cryogenic systems, and a high vacuum metal deposition system in a design that optimizes ice lithography for high throughput nanodevice fabrication. The nanoscale capability of the instrument is demonstrated with the fabrication of nanoscale metal lines.
Han, Anpan [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States); Chervinsky, John [School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States); Branton, Daniel [Department of Molecular and Cellular Biology, Harvard University, Cambridge, Massachusetts 02138 (United States); Golovchenko, J. A. [Department of Physics, Harvard University, Cambridge, Massachusetts 02138 (United States); School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)
Instruments | Neutron Science | ORNL
NScD Careers NScD Careers Supporting Organizations Neutron Science Home | Science & Discovery | Neutron Science | Instruments SHARE Instruments at SNS and HFIR SNS Instrument Name HFIR Instrument Name 1B NOMAD - Nanoscale-Ordered Materials Diffractometer CG-1 Development Beam Line 2 BASIS - Backscattering Spectrometer CG-1D IMAGING - Neutron Imaging Prototype Facility 3 SNAP - Spallation Neutrons and Pressure Diffractometer CG-2 GP-SANS - General-Purpose Small-Angle Neutron Scattering Diffractometer 4A MR - Magnetism Reflectometer CG-3 Bio-SANS - Biological Small-Angle Neutron Scattering Instrument 4B LR - Liquids Reflectometer CG-4C CTAX - Cold Neutron Triple-Axis Spectrometer 5 CNCS - Cold Neutron Chopper Spectrometer HB-1 PTAX - Polarized Triple-Axis Spectrometer
Instrumentation and Controls, IC, Accelerator Operations and...
Instrumentation and Controls, IC About Us AOT Home Teams Beam Diagnostics Controls Software ECAD Electronics Vacuum CONTACTS Group Leader Fred E. Shelley Office Administrator...
Advanced Light Source instrumentation overview
The accelerator instrumentation played a vital role in commissioning the ALS injector accelerator. It helped us to see whether electron dynamics agreed with our theoretical predictions and important beam parameters met the design specifications. It helped us to see where beam losses occurred and why. In this paper we will start with a brief description of the ALS accelerator complex and the expected performance of it. Then we will describe each diagnostics instrument by its construction, operational principle, requirements, and our experiences with it. We will describe the wall current monitor, the scintillator, the Faraday cup, the beam collimator, the beam position monitor, the direct-current current transformer (DCCT), the traveling wave electrodes the Sabersky finger, and other special instruments. Finally, we will go into some detail on how we measured the beam emittances, the closed orbit, and the betatron tunes.
Kim, C.H.; Hinkson, J.
Exertion instruments
This dissertation describes the research, development and reasoning behind a family of musical instruments called Exertion Instruments. They use inline electrical generators to run a synthesizer and an amplifier while ...
Vawter, Noah (Noah Theodore)
Interfacing to accelerator instrumentation
As the sensory system for an accelerator, the beam instrumentation provides a tremendous amount of diagnostic information. Access to this information can vary from periodic spot checks by operators to high bandwidth data acquisition during studies. In this paper, example applications will illustrate the requirements on interfaces between the control system and the instrumentation hardware. A survey of the major accelerator facilities will identify the most popular interface standards. The impact of developments such as isochronous protocols and embedded digital signal processing will also be discussed.
Shea, T.J.
Other Instrumentation
(nuclear magnetic resonance) are used in studies of components for advanced batteries and fuel cells. Chemical analysis instrumentation such as high-performance liquid...
Instrumented SSH
LBNL-****** Instrumented SSH NERSC Center Division Lawrence05CH11231. Introduction NERSC recently undertook a projectof SSH is now running on all NERSC production systems. This
Campbell, Scott
ARM - Instruments
govInstruments govInstruments Instruments Location Table Contacts Instrument Categories Select below to highlight instruments in specified categories. Aerosols Airborne Observations Atmospheric Carbon Measurements of atmospheric carbon are obtained from samples collected at the Southern Great Plains site. For more information about these measurements, see the ARM Carbon Project website. Now available: Aircraft carbon profile samples These data (and more) are freely available in the ARM Archive. The first time you visit the Archive you will need to create a new account-a relatively short form asking for contact information-you can use right away. Coming soon: Airborne continuous CO2 profile samples Atmospheric Profiling Cloud Properties Derived Quantities and Models Ocean Observations
The MICE PID Instrumentation
The international Muon Ionization Cooling Experiment (MICE) will carry out a systematic investigation of ionization cooling of a muon beam. As the emittance measurement will be done on a particle-by-particle basis, sophisticated beam instrumentation is needed to measure particle coordinates and timing vs RF. A PID system based on three time-of-flight stations, two Aerogel Cerenkov detectors and a KLOE-like calorimeter has been constructed in order to keep beam contamination ($e, \\pi$) well below 1%. The MICE time-of-flight system will measure timing with a resolution better than 70 ps per plane, in a harsh environment due to high particle rates, fringe magnetic fields and electron backgrounds from RF dark current.
M. Bonesini
Wire Scanner Beam Profile Measurements: LANSCE Facility Beam Development
The Los Alamos Neutron Science Center (LANSCE) is replacing Wire Scanner (WS) beam profile measurement systems. Three beam development tests have taken place to test the new wire scanners under beam conditions. These beam development tests have integrated the WS actuator, cable plant, electronics processors and associated software and have used H{sup -} beams of different beam energy and current conditions. In addition, the WS measurement-system beam tests verified actuator control systems for minimum profile bin repeatability and speed, checked for actuator backlash and positional stability, tested the replacement of simple broadband potentiometers with narrow band resolvers, and tested resolver use with National Instruments Compact Reconfigurable Input and Output (cRIO) Virtual Instrumentation. These beam tests also have verified how trans-impedance amplifiers react with various types of beam line background noise and how noise currents were not generated. This paper will describe these beam development tests and show some resulting data.
Gilpatrick, John D. [Los Alamos National Laboratory; Batygin, Yuri K. [Los Alamos National Laboratory; Gonzales, Fermin [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory; Kutac, Vincent G. [Los Alamos National Laboratory; Martinez, Derwin [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Pillai, Chandra [Los Alamos National Laboratory; Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory
SSCL RFQ-DTL Matching Section instrumentation
A description of the SSCL RFQ-DTL Matching Section instrumentation is presented with emphasis on design issues and early instrumentation commissioning results. The H{sup {minus}} beam energy through the RFQ-DTL matching section is 2.5 MeV, the beam current is 27 mA with a pulse width of 35 Its. The typical beam diameter is 3 mm. The instrumentation consists of three beam position monitors (BPM), a wire scanner, beam loss monitors (BLM), a slit and collector emittance measurement unit (EMU), a current toroid, and a Faraday cup. The instruments were designed to accommodate high current densities, have a large dynamic range with moderate bandwidths, and fit congested spaces.
Datte, P.; Aielo, R.; Hayworth, M. [and others
Beam emittance measurements at Fermilab
We give short overview of various beam emittance measurement methods, currently applied at different machine locations for the Run II collider physics program at Fermilab. All these methods are based on beam profile measurements, and we give some examples of the related instrumentation techniques. At the end we introduce a multi-megawatt proton source project, currently under investigation at Fermilab, with respect to the beam instrumentation challenges.
Wendt, Manfred; Eddy, Nathan; Hu, Martin; Scarpine, Victor; Syphers, Mike; Tassotto, Gianni; Thurman-Keup, Randy; Yang, Ming-Jen; Zagel, James; /Fermilab
NERSC recently undertook a project to access and analyze Secure Shell (SSH) related data. This includes authentication data such as user names and key fingerprints, interactive session data such as keystrokes and responses, and information about noninteractive sessions such as commands executed and files transferred. Historically, this data has been inaccessible with traditional network monitoring techniques, but with a modification to the SSH daemon, this data can be passed directly to intrusion detection systems for analysis. The instrumented version of SSH is now running on all NERSC production systems. This paper describes the project, details about how SSH was instrumented, and the initial results of putting this in production.
Campbell, Scott; Campbell, Scott
HFIR Instrument Systems | ORNL Neutron Sciences
Click for more information about the HFIR beamline Experiment Hall Click for more information about the HFIR beamline Experiment Hall HFIR instrument layout. Click for details. Instruments at the High Flux Isotope Reactor The instrument suite at HFIR is supported by a variety of sample environments and on-site laboratories for user convenience. If you're unsure which instrument(s) would most benefit your research, or if you would like to request capabilities that you don't see here, please contact our user office. All HFIR Instrument fact sheets are also available in this single PDF document. Available to Users Beam Line Fact Sheet Instrument Name Contact CG-1 Development Beam Line Lee Robertson CG-1D PDF IMAGING - Neutron Imaging Prototype Facility Hassina Bilheux CG-2 PDF GP-SANS - General-Purpose Small-Angle Neutron Scattering Diffractometer Ken Littrell
Beam History
Beam Status Beam History Print Beamline History Request Form To request a beam current histograph from the ALS storage ring beam histograph database, select the year, month, and...
AP Instrumentation
Instrumentation Instrumentation Group's Instrumentation Bruker Avance NMR (400 MHz for 1H). Bruker Kappa Apex II diffractometer. Laser transient absorption facility. Laser excitation in UV and visible: Continuum Leopard SS-10-SV Nd/YAG, 60 ps pulse; Continuum Powerlite 7010 Nd/YAG, 6 ns pulse (266 nm, 355 nm, 532nm), Opotek Vibrant LD 355 II OPO, 6 ns pulse (410 - 2650 nm continuously). Detection in Uv-Vis-NIR at single wavelength with Xe lamp probe (260 - 800 nm, time resolution ca. 100 ps with biplanar tube; 400 - 1600 nm, time resolution 2-3 ns with diode detectors; 260 - 800 nm, time resolution 2-3 ns with PMT). Detection in MIR, spectral region with step-scan FTIR FT-IRS-66/V (4500 - 400 cm-1), time resolution ca. 35 ns, single wavelength with Quantum cascade lasers (2317-2197, 2235-2105, 2230-2020, 2072-1977, 1981-1873, 1903-1774, 1813-1692, 1670-1536, 1395-1306, 1258-1181 and 1135-1051 cm-1), time resolution ca. 5ns. Transient digitizers available: LeCroy HDO4034 350 MHz 12-bit; LeCroy 8620A 6 GHz; Tek DPO 4032 350 MHz; Tek DPO 4054B 500 MHz.
MO, June 4-7, 1979 INSTRUMENTATION FOR ENVIRONMENTALContract W-7405-ENG-48 INSTRUMENTATION FOR ENVIRONMENTAL0.003 mrem C^ Figure 5 INSTRUMENTATION: Too often analytical
McLaughlin, R.D.
Beam History Print Beamline History Request Form To request a beam current histograph from the ALS storage ring beam histograph database, select the year, month, and day, then...
MR Instrument Team - ORNL Neutron Sciences
MR-Instrument Team MR-Instrument Team MR instrument team MR Team (left to right): Valeria Lauter, Lead Instrument Scientist, Primary Contact Artur Glavic, Instrument Scientist Hailemariam Ambaye, Scientific Associate Rick Goyette, Scientific Associate Lead Instrument Scientist: Dr. Valeria Lauter Valeria Lauter Beam line 4A's lead instrument scientist is Valeria Lauter. Valeria received her PhD in Experimental and Theoretical Solid State Physics from the Joint Institute for Nuclear Research in Dubna, Russia. Her previous work has been as a Research Scientist at the Technical University of Munich, Germany; Research Scientist at the University of Konstanz, Germany; Visiting Scientist at the Institute Laue-Langevin in Grenoble, France; Research Scientist at the Laboratoire de Magnetisme CNRS in Grenoble,
Instrument Series: Microscopy
Quanta 3D FEG Quanta 3D FEG This instrument is now available in EMSL's Radiochemistry Annex. The Quanta 3D FEG is the most versatile high-resolution, low vacuum SEM/FIB for 2D and 3D material characterization and analysis. Featuring three imaging modes - high vacuum, low vacuum and ESEM - it accommodates the widest range of samples of any SEM system. The Quanta 3D FEG's novel, field-emission electron source delivers clear and sharp electron imaging and increased electron beam current enhances EDS and EBSP analysis. This system also offers the capability for in situ study of the dynamic behavior of materials at different humidity levels (up to 100% RH) and temperatures (up to 1500 °C). Quanta 3D FEG's unprecedented high- current FIB enables fast material removal.
Sensors, Instrumentation Systems
Sensors, Instrumentation Systems science-innovationassetsimagesicon-science.jpg Sensors, Instrumentation Systems National security depends on science and technology. The...
Instrumentation2: Other instruments, ghost/satellite bunch monitoring, halo, emittance, new developments
In order to estimate in absolute terms the luminosity of LHC certain beam parameters have to be measured very accurately. In particular the total beam current and the relative distribution of the charges around the ring, the transverse size of the beams at the interaction points and the relative position of the beams at the interaction point. The experiments can themselves measure several of these parameters very accurately thanks to the versatility of their detectors, other parameters need however to be measured using the monitors installed on the machine. The beam instrumentation is usually built for the purpose of aiding the operation team in setting up and optimizing the beams, often this only requires precise relative measurements and therefore the absolute scale is usually not very precisely calibrated. The luminosity calibration requires several machine-side instruments to be pushed beyond their initial scope.
Enrico Bravin; for the CERN BE/BI Collaboration
Beam director design report
A design and fabrication effort for a beam director is documented. The conceptual design provides for the beam to pass first through a bending and focusing system (or ''achromat''), through a second achromat, through an air-to-vacuum interface (the ''beam window''), and finally through the vernier steering system. Following an initial concept study for a beam director, a prototype permanent magnet 30/sup 0/ beam-bending achromat and prototype vernier steering magnet were designed and built. In volume II, copies are included of the funding instruments, requests for quotations, purchase orders, a complete set of as-built drawings, magnetic measurement reports, the concept design report, and the final report on the design and fabrication project. (LEW)
Younger, F.C.
Benchmark of the IMPACT Code for High Intensity Beam Dynamics Simulation
of Beam Dynamics in the SNS Linac," Nuclear Instruments andto study beam dynamics in the SNS linac, the J-PARC linac
Qiang, J.; Ryne, R.D.
Ion-beam apparatus and method for analyzing and controlling integrated circuits
An ion-beam apparatus and method for analyzing and controlling integrated circuits. The ion-beam apparatus comprises a stage for holding one or more integrated circuits (ICs); a source means for producing a focused ion beam; and a beam-directing means for directing the focused ion beam to irradiate a predetermined portion of the IC for sufficient time to provide an ion-beam-generated electrical input signal to a predetermined element of the IC. The apparatus and method have applications to failure analysis and developmental analysis of ICs and permit an alteration, control, or programming of logic states or device parameters within the IC either separate from or in combination with applied electrical stimulus to the IC for analysis thereof. Preferred embodiments of the present invention including a secondary particle detector and an electron floodgun further permit imaging of the IC by secondary ions or electrons, and allow at least a partial removal or erasure of the ion-beam-generated electrical input signal.
Campbell, Ann N. (Albuquerque, NM); Soden, Jerry M. (Placitas, NM)
Low activated incore instrument
Instrumentation for nuclear reactor head-mounted incore instrumentation systems fabricated of low nuclear cross section materials (i.e., zirconium or titanium). The instrumentation emits less radiation than that fabricated of conventional materials.
Ekeroth, Douglas E. (Delmont, PA)
Instrumentation is described for nuclear reactor head-mounted incore instrumentation systems fabricated of low nuclear cross section materials (i.e., zirconium or titanium). The instrumentation emits less radiation than that fabricated of conventional materials. 9 figures.
Ekeroth, D.E.
Beam Time Allocation Committee (BAC)
Time Allocation Committee (BAC) Time Allocation Committee (BAC) Charter Purpose: Allocates general user beam time by instrument to promote diverse and high- impact science and a broad-based user community to meet DOE and NSSD goals. Participants: BAC Chair (appointed by NSSD Director), Instrument Group Leaders, User Office Schedule: Tied to proposal calls - expected to meet at least 2 times/year with meetings scheduled about 6 weeks after the proposal call has closed and at least 1 month prior to scheduled operations. Process: 1. Instrument Group Leaders (with group members): a. Confirm feasibility (equipment requirements and instrument capabilities) and safe operations b. Review amount of beam time requested and adjust as needed with consideration for instrument and sample environment availability.
ARM - Instrument - 50rwp
govInstruments50rwp Documentation 50RWP : Handbook 50RWP : Instrument Mentor Monthly Summary (IMMS) reports 50RWP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse...
ARM - Campaign Instrument - semsamp
Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Scanning Electron Microscope Sampler (SEMSAMP) Instrument Categories Aerosols Campaigns...
ARM - Instrument - sonicwind
you Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : ultrasonic wind sensor (SONICWIND) Instrument Categories Surface Meteorology Output Datastreams...
ARM - Campaign Instrument - ecmwf
1-888-ARM-DATA. Send Campaign Instrument : European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Instrument Categories Derived Quantities and Models Campaigns...
ARM - Instrument - ecmwf
call us at 1-888-ARM-DATA. Send Instrument : European Centre for Medium Range Weather Forecasts Model Data (ECMWF) Instrument Categories Derived Quantities and Models General...
ARM - Site Instruments
FacilitiesAMF Deployment, Black Forest, GermanyInstruments Black Forest Deployment AMF Home Black Forest Home Data Plots and Baseline Instruments CERA COPS Data University of...
ARM - Campaign Instrument - pcasp
you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Passive Cavity Aerosol Spectrometer (PCASP) Instrument Categories Aerosols, Airborne...
Particle size distribution instrument. Topical report 13
The development of an instrument to measure the concentration of particles in gas is described in this report. An in situ instrument was designed and constructed which sizes individual particles and counts the number of occurrences for several size classes. Although this instrument was designed to detect the size distribution of slag and seed particles generated at an experimental coal-fired magnetohydrodynamic power facility, it can be used as a nonintrusive diagnostic tool for other hostile industrial processes involving the formation and growth of particulates. Two of the techniques developed are extensions of the widely used crossed beam velocimeter, providing simultaneous measurement of the size distribution and velocity of articles.
Okhuysen, W.; Gassaway, J.D.
Radiation Detection Instruments
Directory of Accredited Laboratories. Radiation Detection Instruments. In 2005, the Department of Homeland Security requested ...
Instrument Series: Deposition and Microfabrication
Deposition and Microfabrication Deposition and Microfabrication Sputter Deposition System Only available at EMSL, the Discovery ® Deposition System has been customized to be a fully automated multi-functional "hybrid" instrument with several modes for thin film processing, including multi-target sputtering, effusion cell deposition, electron beam deposition, and in-situ reflection high-energy electron diffraction (RHEED) materials characterization. Unlike most systems, the Discovery ® Deposition System's unique configuration offers operational flexibility, efficiency, and control, allowing a range of applications and materials to be processed simultaneously. Because it is software controlled, users can provide their own "recipes" and have a complete log of what happens throughout the
FacilityInstruments FacilityInstruments AAF Information Proposal Process Science (PDF) Baseline Instruments Campaign Instruments Instrumentation Workshop 2008 AAF Fact Sheet G-1 Fact Sheet Images Field Campaigns AAF Campaigns 2007 - UAV Campaigns 1993 - 2006, 2015 Other Aircraft Campaigns 1993 - 2010 AAF Contacts Rickey Petty DOE AAF Program Director Beat Schmid Technical Director AAF Baseline Instruments The following instruments represent available capabilities. The needs of each field campaign will be assessed and additional instruments may be added upon request. For a list of past campaign instruments and their data, see the Airborne Observations instruments. Examples of cabin configurations for the G-1 from past and upcoming campaigns are also available. Payload Example from 2010 Payload Example from 2010
Specifications of the NOMAD Instrument | ORNL Neutron Sciences
Specifications of the NOMAD Instrument Beam line 1B Moderator decoupled poisoned supercritical hydrogen Moderator-to-sample distance 19.5 m Sample-to-detector distance 0.5 - 3 m...
ARM - Recovery Act Instruments
ActRecovery Act Instruments ActRecovery Act Instruments Recovery Act Logo Subscribe FAQs Recovery Act Instruments Recovery Act Fact Sheet March 2010 Poster (PDF, 10MB) External Resources Recovery Act - Federal Recovery Act - DOE Recovery Act - ANL Recovery Act - BNL Recovery Act - LANL Recovery Act - PNNL Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Recovery Act Instruments These pages provide a breakdown of the new instruments planned for installation among the permanent and mobile ARM sites. In addition, several instruments will be purchased for use throughout the facility and deployed as needed. These are considered "facility spares" and are included in the table below. View All | Hide All ARM Aerial Facility Instrument Title Instrument Mentor Measurement Group Measurements
ARM - Campaign Instrument - twrmr
from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Tower Water-Vapor Mixing Ratio (TWRMR) Instrument Categories Atmospheric Profiling Campaigns...
ARM - Campaign Instrument - towerflux
from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Tower Flux Measurements (TOWERFLUX) Instrument Categories Radiometric, Surface Meteorology...
ARM - Campaign Instrument - cmh
from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Chilled Mirror Hygrometer (CMH) Instrument Categories Surface Meteorology Campaigns 1995...
ARM - Campaign Instrument - nawx
from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NRC Airborne W and X Band Radar (NAWX) Instrument Categories Cloud Properties, Airborne...
Horizontal Beam Tubes - HFIR Technical Parameters | ORNL Neutron Sciences
Horizontal Beam Tubes Horizontal Beam Tubes The reactor has four horizontal beam tubes that supply the neutrons to the neutron scattering instruments. Details for each beam tube and instrument can be found on the HFIR instrument page. Each of the beam tubes that supply these instruments with neutrons is described subsequently. HB-1 and HB-3 The HB-1 and HB-3 thermal neutron beam tube designs are identical except for the length. Both are situated tangential to the reactor core so that the tubes point at reflector material and do not point directly at the fuel. An internal collimator is installed at the outboard end. This collimator is fabricated out of carbon steel and is plated with nickel. The collimator provides a 2.75-in by 5.5-in. rectangular aperture. A rotary shutter is located outboard of each of these beam tubes. The
ARM - Instrument - disdrometer
govInstrumentsdisdrometer Documentation DISDROMETER : Handbook DISDROMETER : Instrument Mentor Monthly Summary (IMMS) reports DISDROMETER : Data Quality Assessment (DQA) reports...
ARM - Instrument Location Table
govInstrumentsLocation Table govInstrumentsLocation Table Instruments Location Table Contacts Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument Locations Site abbreviations explained in the key. Instrument Name Abbreviation NSA SGP TWP AMF C1 C2 EF BF CF EF IF C1 C2 C3 EF IF Aerosol Chemical Speciation Monitor ACSM Atmospheric Emitted Radiance Interferometer AERI Aethalometer AETH Ameriflux Measurement Component AMC Aerosol Observing System AOS Meteorological Measurements associated with the Aerosol Observing System AOSMET Broadband Radiometer Station BRS
ICFA Beam Dynamics Newsletter
The Collider-Accelerator Department at Brookhaven National Laboratory is building a high-brightness 500 mA capable Energy Recovery Linac (ERL) as one of its main R&D thrusts towards eRHIC, the polarized electron - hadron collider as an upgrade of the operating RHIC facility. The ERL is in final assembly stages, with injection commisioning starting in October 2012. The objective of this ERL is to serve as a platform for R&D into high current ERL, in particular issues of halo generation and control, Higher-Order Mode (HOM) issues, coherent emissions for the beam and high-brightness, high-power beam generation and preservation. The R&D ERL features a superconducting laser-photocathode RF gun with a high quantum efficiency photoccathode served with a load-lock cathode delivery system, a highly damped 5-cell accelerating cavity, a highly flexible single-pass loop and a comprehensive system of beam instrumentation. In this ICFA Beam Dynamics Newsletter article we will describe the ERL in a degree of detail that is not usually found in regular publications. We will discuss the various systems of the ERL, following the electrons from the photocathode to the beam dump, cover the control system, machine protection etc and summarize with the status of the ERL systems.
Ben-Zvi I.; Kuczewski A.; Altinbas, Z.; Beavis, D.; Belomestnykh,; Dai, J. et al
Neutron Instruments Added at Oak Ridge
The neutron scattering facilities at Oak Ridge National Laboratory continue their development as new instruments are commissioned and join the user program at the Spallation Neutron Source and High Flux Isotope Reactor. More than 640 proposals were received for beam time during the January-May 2011 period on SNS and HFIR instruments with about half either being accepted or identified as alternates. The proposal call for the period June-December 2011, announced at http://neutrons.ornl.gov, will close February 23, 2011.
Ekkebus, Allen E [ORNL
Ion and electron beam nanofabrication of the which-way double-slit experiment in a transmission electron microscope
We have realized a which-way experiment closely resembling the original Feynman's proposal exploiting focused ion beam milling to prepare two nanoslits and electron beam induced deposition to grow, selectively over one of them, electron transparent layers of low atomic number amorphous material to realize a which-way detector for high energy electrons. By carrying out the experiment in an electron microscope equipped with an energy filter, we show that the inelastic scattering of electron transmitted through amorphous layers of different thicknesses provides the control of the dissipative interaction process responsible for the localization phenomena which cancels out the interference effects.
Frabboni, Stefano [Department of Physics, University of Modena and Reggio Emilia and CNR-Institute of Nanoscience-S3, via G. Campi 213/a, 41100 Modena (Italy); Gazzadi, Gian Carlo [CNR-Institute of Nanoscience-S3, via G. Campi 213/a, 41100 Modena (Italy); Pozzi, Giulio [Department of Physics, University of Bologna, viale B. Pichat 6/2, 40127 Bologna (Italy)
Choppers - Instrument Support | ORNL Neutron Sciences
Neutron Choppers Neutron Choppers The primary mission of the Neutron Chopper Team is to provide functional, reliable, safe, and operationally proven neutron chopper systems as required by the SNS instrument beam lines. Type of Choppers Activities Facilities Equipment TOP2 T0 chopper installed and operating in a CTF lower level chopper test bay. (Click for a larger picture) Chopper technician Bill Jordan recording chopper balance data. Types of Choppers Neutron choppers are rotating mechanical devices designed to block the neutron beam for some fraction of each revolution of the chopper. Our goal is to have at least three different functional classes of neutron choppers available for user experiments. Most, if not all, of these will be designed in standard forms that are interchangeable among the instruments. Most
Central FacilityInstruments Central FacilityInstruments SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility [ Single installation ] ACSM Aerosol Chemical Speciation Monitor Aerosols Browse Data [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Plots Browse Data [ Single installation ] BRS Broadband Radiometer Station Radiometric Browse Plots Browse Data [ Single installation ] BSRN Baseline Solar Radiation Network
Darwin SiteInstruments Darwin SiteInstruments TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Central Facility, Darwin, Australia [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] CSPHOT Cimel Sunphotometer Aerosols, Radiometric Browse Data [ Single installation ] DISDROMETER Impact Disdrometer Surface Meteorology Browse Plots Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Browse Data [ Single installation ] GNDRAD Ground Radiometers on Stand for Upwelling Radiation Radiometric Browse Plots
PlainsInstruments PlainsInstruments SGP Related Links Facilities and Instruments Central Facility Boundary Facility Extended Facility Intermediate Facility Radiometric Calibration Facility Geographic Information ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Fact Sheet Images Information for Guest Scientists Contacts Instruments : Southern Great Plains [ Single installation ] ACSM Aerosol Chemical Speciation Monitor Aerosols Browse Data [ Installed at 5 facilities ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Plots Browse Data [ Single installation ] BRS Broadband Radiometer Station Radiometric Browse Plots Browse Data [ Single installation ] BSRN Baseline Solar Radiation Network
PacificInstruments PacificInstruments TWP Related Links Facilities and Instruments Manus Island Nauru Island Darwin, AUS ES&H Guidance Statement Operations Science Field Campaigns Year of Tropical Convection Visiting the Site TWP Fact Sheet Images Information for Guest Scientists Contacts Instruments : Tropical Western Pacific [ Installed at 3 facilities ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Installed at 2 facilities ] CSAPR C-Band ARM Precipitation Radar Cloud Properties Browse Data [ Installed at 3 facilities ] CSPHOT Cimel Sunphotometer Aerosols, Radiometric Browse Data [ Single installation ] DISDROMETER Impact Disdrometer Surface Meteorology Browse Plots Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Browse Data [ Installed at 3 facilities ]
ARM - Instrument - blc
govInstrumentsblc Documentation BLC : Handbook BLC : Instrument Mentor Monthly Summary (IMMS) reports BLC : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - gvrp
govInstrumentsgvrp Documentation GVRP : Handbook GVRP : Instrument Mentor Monthly Summary (IMMS) reports GVRP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - tdma
govInstrumentstdma Documentation TDMA : Handbook TDMA : Instrument Mentor Monthly Summary (IMMS) reports TDMA : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - csphot
govInstrumentscsphot Documentation CSPHOT : Handbook CSPHOT : Instrument Mentor Monthly Summary (IMMS) reports CSPHOT : Data Quality Assessment (DQA) reports ARM Data Discovery...
ARM - Instrument - co
govInstrumentsco Documentation CO : Handbook CO : Instrument Mentor Monthly Summary (IMMS) reports CO : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - asti
govInstrumentsasti Documentation ASTI : Handbook ASTI : Instrument Mentor Monthly Summary (IMMS) reports ASTI : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - surthref
govInstrumentssurthref Documentation SURTHREF : Handbook SURTHREF : Instrument Mentor Monthly Summary (IMMS) reports SURTHREF : Data Quality Assessment (DQA) reports ARM Data...
ARM - Instrument - swats
govInstrumentsswats Documentation SWATS : Handbook SWATS : Algorithms (PDF) SWATS : Instrument Mentor Monthly Summary (IMMS) reports SWATS : Data Quality Assessment (DQA) reports...
ARM - Instrument - smet
govInstrumentssmet Documentation SMET : Handbook SMET : Instrument Mentor Monthly Summary (IMMS) reports SMET : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - kazr
govInstrumentskazr Documentation KAZR : Handbook KAZR : Instrument Mentor Monthly Summary (IMMS) reports KAZR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - wsi
govInstrumentswsi Documentation WSI : Handbook WSI : Instrument Mentor Monthly Summary (IMMS) reports WSI : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - ebbr
govInstrumentsebbr Documentation EBBR : Handbook EBBR : Instrument Mentor Monthly Summary (IMMS) reports EBBR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data...
ARM - Instrument - xsapr
govInstrumentsxsapr Documentation XSAPR : Handbook XSAPR : Instrument Mentor Monthly Summary (IMMS) reports XSAPR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse...
HFBS Instrument Homepage
... The NCNR backscattering spectrometer is one of the highest intensity instruments of its kind. It enables very high energy resolution studies of the ...
Manacapuru, Brazil Instruments Manacapuru Deployment AMF Home Manacapuru Home GOAMAZON Home Experiment Planning Abstract and Related Campaigns Science Plan (PDF, 1.4MB) Deployment...
Instrument performance evaluation
Deficiencies exist in both the performance and the quality of health physics instruments. Recognizing the implications of such deficiencies for the protection of workers and the public, in the early 1980s the DOE and the NRC encouraged the development of a performance standard and established a program to test a series of instruments against criteria in the standard. The purpose of the testing was to establish the practicality of the criteria in the standard, to determine the performance of a cross section of available instruments, and to establish a testing capability. Over 100 instruments were tested, resulting in a practical standard and an understanding of the deficiencies in available instruments. In parallel with the instrument testing, a value-impact study clearly established the benefits of implementing a formal testing program. An ad hoc committee also met several times to establish recommendations for the voluntary implementation of a testing program based on the studies and the performance standard. For several reasons, a formal program did not materialize. Ongoing tests and studies have supported the development of specific instruments and have helped specific clients understand the performance of their instruments. The purpose of this presentation is to trace the history of instrument testing to date and suggest the benefits of a centralized formal program.
Swinth, K.L.
ARM - Instrument - twr
are listed in section 7, Instrument Details, although only the TemperatureRelative HumidityVapor Pressure (TRHVP) measurements made on the SGP CF tower are described in...
Instrumentation of Gait Analysis.
?? This master's thesis project "Instrumentation of Gait Analysis" was carried out at and funded by Integrum AB, Gothenburg, Sweden. Force analysis is critical during… (more)
Ma, Weizen
AlaskaInstruments AlaskaInstruments NSA Related Links Facilities and Instruments Barrow Atqasuk ES&H Guidance Statement Operations Science Field Campaigns Visiting the Site Images Information for Guest Scientists Contacts Instruments : North Slope Alaska [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AMC Ameriflux Measurement Component Radiometric, Surface/Subsurface Properties Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] CLAP Continuous Light Absorption Photometer Aerosols Browse Data [ Single installation ] CPC Condensation Particle Counter Aerosols Browse Data
Eddy Current Instruments
Table 2Â Â Â Types and capabilities of commercially available eddy current instruments...measurement of four variables, analog
Instrument Schedule for dcs
... Tue Sep 18 2007, 0, -, Determination of beam profile (2 hours), Rodriguez ... part 1), Jenkins*, Brown*, Liu* and Her*, NCNR, CCR, top-loading, 5-600K ...
ICFA instrumentation bulletin, Volume 15, Fall 1997
The Bulletin reports on research and progress in the field of instrumentation with emphasis in the field of high-energy physics. This volume contains the following four papers: (1) Streamers in MSGC's and Other Gaseous Detectors; (2) Soft X-Ray Production in Spark Discharges in Hydrogen, Nitrogen, Air, Argon, and Xenon Gases; (3) Beam Tests of the CLEO III LiF-TEA Ring Imaging Cherenkov Detector; and (4) Electron Multiplication and Secondary Scintillation in Liquid Xenon: New Prospects.
Va'vra, J. [ed.
JAERI instrumented spool piece performance in two-phase flow
Instrumented spool pieces to be installed in horizontal piping on the Cylindrical Core Test Facility (CCTF) at the Japanese Atomic Energy Institute (JAERI) have been designed and tested. The instrumented spool pieces will provide measurements from which mass flow rates can be computed. The primary instruments included in the spool pieces are a full-flow turbine, a full-flow perforated drag plate, and a low energy three-beam photon densitometer. Secondary instruments are provided to measured absolute pressure, fluid temperature, and differential pressure across the full-flow perforated drag plate.
Colson, J.B.; Gilbert, J.V.
Portable instrument for inspecting irradiated nuclear fuel assemblies
A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.
Nicholson, Nicholas (Los Alamos, NM); Dowdy, Edward J. (Los Alamos, NM); Holt, David M. (Los Alamos, NM); Stump, Jr., Charles J. (Santa Fe, NM)
Intensity Frontier Instrumentation
This report summarizes findings of the 2013 Snowmass Community Summer Study Instrumentation Frontier's subgroup on the Intensity Frontier. This report is directed at identifying instrumentation R&D needed to support particle physics research over the coming decades at the Intensity Frontier.
S. H. Kettell; R. A. Rameika; R. S. Tschirhart
ARM - Instrument - prp
govInstrumentsprp govInstrumentsprp Documentation PRP : Instrument Mentor Monthly Summary (IMMS) reports PRP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Portable Radiation Package (PRP) Instrument Categories Radiometric The Portable Radiation Package (PRP) is an instrument suite to collect atmospheric radiation measurements on a moving platform. The instrument suite consists of a Precision Spectral Pyranometer (PSP), Precision Infrared Radiometer (PIR), and continuously rotating shadowband radiometer. Output Datastreams 1sprprad : Portable Radiation Package: Broadband Radiometers, 1 second resolution 6sprpfrsr : Portable Radiation Package: Fast Rotating Shadowband
ARM - Instrument - mettwr
govInstrumentsmettwr govInstrumentsmettwr Documentation METTWR : Handbook METTWR : Instrument Mentor Monthly Summary (IMMS) reports METTWR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Surface and Tower Meteorological Instrumentation at NSA (METTWR) Instrument Categories Surface Meteorology Picture of the Surface meteorological measurements from tower (METTWR) Picture of the Surface meteorological measurements from tower (METTWR) General Overview Surface and Tower Meteorological Instrumentation at NSA (METTWR) use mainly conventional in situ sensors to measure wind speed, wind direction, air temperature, dew point, and humidity mounted on either a 10-m or a 40-m
Moderators - Instrument Support | ORNL Neutron Sciences
Moderators Moderators Detailed design of scattering instruments requires detailed knowledge of the neutron beam emitted from the moderator in question. We are currently providing moderator performance estimates based on the result of detailed Monte Carlo simulations of the entire target system. These simulations are being performed for both the High Power Target Station (HPTS) and the Long Wavelength Target Station (LWTS), and have been performed for the Intense Pulsed Neutron Source (IPNS) in the same manner. We make the IPNS source files available as a means to benchmark instrument simulation codes. These files follow a particular "source file format" which will adapt to the changing needs of instrument simulation as necessary. We also provide worked examples showing how to use the information in the source files
ARM - Instrument - assist
govInstrumentsassist govInstrumentsassist Documentation ASSIST : Instrument Mentor Monthly Summary (IMMS) reports ASSIST : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST) Instrument Categories Radiometric The Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST), like the AERI, measures infrared spectral zenith radiance at high spectral resolution. Output Datastreams assistch1 : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST): channel 1 data assistch2 : Atmospheric Sounder Spectrometer for Infrared Spectral Technology (ASSIST): channel 2 data
Sensors, Electronics & Instrumentation
Sensors, Electronics & Instrumentation Sensors, Electronics & Instrumentation Sensors, Electronics & Instrumentation Express Licensing Acoustic Concentration Of Particles In Fluid Flow Express Licensing Apparatus And Method For Hydrogen And Oxygen Mass Spectrometry Of The Terrestrial Magnetosphere Express Licensing Apparatus And Method For Temperature Correction And Expanded Count Rate Of Inorganic Scintillation Detectors Express Licensing Composition and method for removing photoresist materials from electronic components Express Licensing Corrosion Test Cell For Bipolar Plates Express Licensing Cylindrical Acoustic Levitator/Concentrator Negotiable Licensing Electrochemical Apparatus with Disposable and Modifiable Parts Express Licensing Foil electron multiplier Express Licensing Hydrogen Sensor
Point Reyes National Seashore, Point Reyes National Seashore, CaliforniaInstruments Point Reyes Deployment AMF Home Point Reyes Home Data Plots and Baseline Instruments Experiment Planning MASRAD Proposal Abstract and Related Campaigns Outreach Posters Climate Research at Point Reyes National Seashore (horizontal) Climate Research at Point Reyes National Seashore (vertical) News Campaign Images Instruments : Point Reyes CA, USA [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] ECOR Eddy Correlation Flux Measurement System Surface/Subsurface Properties Browse Plots
Oliktok Point, Oliktok Point, AlaskaInstruments Oliktok Deployment AMF Home Oliktok Home Deployment Operations Baseline Instruments and Data Plots at the Archive Outreach News & Press New Sites Fact Sheet (PDF, 1.6MB) Images Contacts Fred Helsel, AMF Operations Lynne Roeder, Media Contact Hans Verlinde, Principal Investigator Instruments : Oliktok Point, Alaska [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Not Online [ Single installation ] CSAPR C-Band ARM Precipitation Radar Cloud Properties Not Online [ Single installation ] CSPHOT Cimel Sunphotometer Aerosols Browse Data [ Single installation ] DL Doppler Lidar Cloud Properties Not Online [ Single installation ] ECOR Eddy Correlation Flux Measurement System Surface/Subsurface Properties Not Online [ Single installation ]
Performance of Advanced Light Source particle beam diagnostics
The Advanced Light Source (ALS), a third-generation synchrotron radiation facility, is complete. The particle beam diagnostics have been installed and tested. The beam injection systems have been running for two years. We have performance data on beam position monitors, beam intensity monitors, scintillators, beam collimators, a 50 {Omega} Faraday cup, and broad-band striplines and kickers used in the linac, transport lines, and the booster synchrotron. The single-turn monitoring capability of the booster beam position monitoring system has been particularly useful for studying beam dynamics. Beam diagnostics for the storage ring are being commissioned. In this paper we describe each instrument, show its performance, and outline how the instruments are controlled and their output data displayed.
Hinkson, J.
ARM - Instrument - vdis
govInstrumentsvdis govInstrumentsvdis Documentation VDIS : Instrument Mentor Monthly Summary (IMMS) reports VDIS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Video Disdrometer (VDIS) Instrument Categories Surface Meteorology General Overview A disdrometer is an instrument used to measure the drop size distribution and velocity of falling hydrometeors. The 2-dimensional video-disdrometer (vdis) is comprised of video cameras capable of observing individual hydrometeors from views perpendicular to each other. Two CCD line scan cameras are directed towards the measurement area. Objects passing thru the measurement area-which is determined by the cross-section of the two
ARM - Instrument - rl
govInstrumentsrl govInstrumentsrl Documentation RL : Handbook RL : Instrument Mentor Monthly Summary (IMMS) reports RL : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Raman Lidar (RL) Beneficiary of Recovery Act funding. Instrument Categories Aerosols, Atmospheric Profiling Picture of the Raman Lidar (RL) Picture of the Raman Lidar (RL) General Overview The Raman Lidar (RL) is an active, ground-based laser remote sensing instrument that measures vertical profiles of water-vapor mixing ratio and several cloud- and aerosol-related quantities. Lidar (light detection and ranging) is the optical analog of radar, using pulses of laser radiation to probe the atmosphere. This system is fully computer automated, and will run
ARM - Instrument - mwr
govInstrumentsmwr govInstrumentsmwr Documentation MWR : Handbook MWR : Instrument Mentor Monthly Summary (IMMS) reports MWR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Microwave Radiometer (MWR) Instrument Categories Radiometric, Cloud Properties, Atmospheric Profiling Picture of the Microwave Radiometer (MWR) Picture of the Microwave Radiometer (MWR) General Overview The Microwave Radiometer (MWR) provides time-series measurements of column-integrated amounts of water vapor and liquid water. The instrument itself is a sensitive microwave receiver that detects the microwave emissions of the vapor and liquid water molecules in the atmosphere at two
ARM - Instrument Contacts
govInstrumentsContacts govInstrumentsContacts Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument Contacts (Mentors) Instrument Name Abbreviation Contact Phone Absolute Solar Transmittance Interferometer ASTI Douglas Sisterson 630.252.5836 Aerosol Chemical Speciation Monitor ACSM Bill Behrens 631.344.2906 Yin-Nan Lee associate 631.344.3294 Stephen Springston 631.344.4477 Thomas Watson associate 631.344.4517 Aerosol Observing System AOS Bill Behrens 631.344.2906 Manvendra Dubey 505.665.3128 Brian Ermold Developer 509.375.2277 Anne Jefferson 303.497.6493 Chongai Kuang 631.344.7257 Yin-Nan Lee 631.344.3294 Arthur Sedlacek 631.344.2404 Gunnar Senum 631.344.3896 Patrick Sheridan associate 303.497.6672 Stephen Springston 631.344.4477
ARM - Instrument Datastreams
govDataInstrument Datastreams govDataInstrument Datastreams Measurement Categories Select below to highlight datastreams in specified measurement categories. Aerosols The effect of aerosols is measured by instrument systems and lidars that provide data on the size distribution, optical properties, scattering, and extinction of aerosols. Atmospheric Carbon Measurements of atmospheric carbon are obtained from samples collected at the Southern Great Plains site. For more information about these measurements, see the ARM Carbon Project website. Coming soon: Aircraft carbon profile samples Atmospheric State Cloud Properties Active and passive remote sensing instruments are used to measure the macroscopic properties (horizontal and vertical distributions) of clouds, and the microphysical properties (sizes, shapes, and phases [water or ice])
ARM - Instrument - spn
govInstrumentsspn govInstrumentsspn Documentation SPN : Instrument Mentor Monthly Summary (IMMS) reports SPN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Sunshine Pyranometer (SPN) Instrument Categories Radiometric The Sunshine Pyranometer (SPN) measures total and diffuse short wave solar irradiance with an array of seven thermopile detectors arranged beneath a permanent shading pattern. The instrument is able to measure both total and diffuse irradiance with no moving parts. Primary Measurements The following measurements are those considered scientifically relevant. Shortwave broadband diffuse downwelling irradiance Shortwave broadband total downwelling irradiance
ARM - Instrument - sws
govInstrumentssws govInstrumentssws Documentation SWS : Handbook SWS : Instrument Mentor Monthly Summary (IMMS) reports SWS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Shortwave Spectroradiometer (SWS) Instrument Categories Aerosols, Radiometric General Overview The Shortwave Spectroradiometer (SWS), measures the absolute visible and near infrared spectral radiance (units of watts per meter square per nanometer per steradian) of the zenith directly above the instrument. The SWS is a moderate resolution sensor comprised of two Zeiss spectroradiometers (MMS 1 NIR enhanced and NIR-PGS 2.2) for visible and near-infrared detection in the wavelength range 350 - 2170 nm. The sampling
ARM - Instrument - smos
govInstrumentssmos govInstrumentssmos Documentation SMOS : Handbook SMOS : Instrument Mentor Monthly Summary (IMMS) reports SMOS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Surface Meteorological Observation System Instruments for SGP (SMOS) Instrument Categories Surface Meteorology Picture of the Surface Meteorological Observation System (SMOS) Picture of the Surface Meteorological Observation System (SMOS) General Overview The Surface Meteorological Observation System (SMOS) mostly uses conventional in situ sensors to obtain 1-minute, 30-minute, and 1440-minute (daily) averages of surface wind speed, wind direction, air temperature, relative humidity (RH), barometric pressure, and precipitation at the
Nuclear Imaging instrumentation
Nuclear Imaging instrumentation Advances in gamma-ray detection and imaging have increased the pace of discovery in a broad cross-section of the sciences ranging from nuclear...
ARM - Instrument - ngm
from you Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Nested Grid Model (NGM) Note: ngm is currently inactive andor retired. Active Dates 1993.10.09 -...
EMSL: Science: Instruments
Full Instrument List Full Instrument List To help with proposal planning, icons in the table below indicate instrument availability: 10 hours a day, 5 days a week 24 hours a day, 7 days a week Instrument Contact 5500XL SOLiD Sequencers Markillie,Lye Meng Orr, Galya Analytical: Total Organic Carbon Analyzer (TOC) Wietsma, Tom Analytical: Chromatograph, Gas/Mass Spec System 2005 Wietsma, Tom Analytical: Chromatograph, Ion Wietsma, Tom Analytical: Chromatograph, Liquid Wietsma, Tom Atmospheric Pressure Reactor System Tonkyn, Russell Catalysis: UHV Model Catalysts, High Pressure Szanyi, Janos Computing: Cascade (Atipa 1440 Intel Xeon-Phi Node FDR-Infiniband Linux Cluster) Baxter, Doug Computing: Data File Storage (Aurora) (GB) Cowley, Dave Wright, Ryan CyTOF - Mass Cytometry Orr, Galya Deposition: Hybrid Thin Film Deposition System
ARM - Instrument - rain
govInstrumentsrain govInstrumentsrain Documentation RAIN : Handbook RAIN : Instrument Mentor Monthly Summary (IMMS) reports RAIN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Rain Gauge (RAIN) Beneficiary of Recovery Act funding. Instrument Categories Surface Meteorology General Overview The tipping bucket rain gauge was located next to the disdrometer. It was replaced with a weighing bucket rain gauge in FY2010. Please contact the instrument mentor, if you have any questions. Output Datastreams rain : Rain gauge Primary Measurements The following measurements are those considered scientifically relevant. Precipitation Locations Eastern North Atlantic
Virtual Doppler Lidar Instrument
Doppler lidars measure the range-resolved line-of-sight wind component by extracting the Doppler shift of radiation backscattered from atmospheric aerosols and molecules. A virtual instrument was developed to simulate wind measurements by flying ...
Ines Leike; Jürgen Streicher; Christian Werner; Viktor Banakh; Igor Smalikho; Werner Wergen; Alexander Cress
ARM - Instrument - sashe
govInstrumentssashe govInstrumentssashe Documentation SASHE : Instrument Mentor Monthly Summary (IMMS) reports SASHE : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Shortwave Array Spectroradiometer-Hemispheric (SASHE) Beneficiary of Recovery Act funding. Instrument Categories Radiometric General Overview The Shortwave Array Spectroradiometer - Hemispheric (SASHE) uses a hemispheric spectralon diffuser and rotating shadowband similar to the MFRSR and RSS instruments, so it also provides spectrally resolved, direct-normal, diffuse-horizontal, and total-horizontal irradiances, and can be calibrated in situ via Langley regression. The SASHE incorporates
ARM - Instrument - nimfr
govInstrumentsnimfr govInstrumentsnimfr Documentation NIMFR : Handbook NIMFR : Instrument Mentor Monthly Summary (IMMS) reports NIMFR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Normal Incidence Multifilter Radiometer (NIMFR) Instrument Categories Aerosols, Radiometric Picture of the Normal Incidence Multi-Filter Radiometer (NIMFR) Picture of the Normal Incidence Multi-Filter Radiometer (NIMFR) General Overview The Normal Incidence Multi-Filter Radiometer (NIMFR) is a ground-based instrument that provides a time series of the shortwave spectral direct normal irradiance. Additionally, there is a broadband silicon detector that can crudely measure the direct normal broadband irradiance. These
Computer identification of musical instruments
The objective is to identify musical instruments using a computer. The characteristics of a musical instrument can be determined by the frequency spectrum of a specific note. The spectrum will vary for different instruments. This variation identifies the instrument. The waveforms of musical instruments (simulated by an electronic keyboard) are stored in the computer. Experimental data were collected for clarinet
Sudha Rani Narasimhan
The Multiple Altimeter Beam Experimental Lidar (MABEL): An Airborne Simulator for the ICESat-2 Mission
This paper presents the motivation for, and initial results from, the Multiple Altimeter Beam Experimental lidar (MABEL) instrument. The MABEL instrument provides a new capability for airborne altimetry measurements and serves as a prototype and ...
Matthew McGill; Thorsten Markus; V. Stanley Scott; Thomas Neumann
LANSCE | Lujan Center | Instruments | SPEAR
Surface Profile Analysis Reflectometer SPEAR Home Page SPEAR Technical Sheet Jaroslaw Majewski Jarek Majewski Instrument Scientist 505.667.8840 firstname.lastname@example.com Peng Wang Instrument...
Automated Manufacture of Spinal Instrumentation.
??Current scoliosis corrective surgeries may include the use of multiple instrumentation devices including screws, wires, nuts, and rods. The instrumentation in most cases is implemented… (more)
Pilson, Richard Ryan
ARM - Instrument - gvr
govInstrumentsgvr govInstrumentsgvr Documentation GVR : Handbook GVR : Instrument Mentor Monthly Summary (IMMS) reports GVR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : G-band (183 GHz) Vapor Radiometer (GVR) Instrument Categories Radiometric Picture of the G-band (183 GHz) Vapor Radiometer (GVR) Picture of the G-band (183 GHz) Vapor Radiometer (GVR) General Overview The G-Band Vapor Radiometer (GVR) provides time-series measurements of brightness temperatures from four double sideband channels centered at ±1, ±3, ±7, and ±14 GHz around the 183.31-GHz water vapor line. Atmospheric emission in this spectral region is primarily due to water vapor, with some
ARM - Instrument - xsacr
govInstrumentsxsacr govInstrumentsxsacr Documentation XSACR : Handbook XSACR : Instrument Mentor Monthly Summary (IMMS) reports XSACR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : X-Band Scanning ARM Cloud Radar (XSACR) Beneficiary of Recovery Act funding. Instrument Categories Cloud Properties Picture of the X-band scanning ARM cloud radar Picture of the X-band scanning ARM cloud radar Note: All the Scanning ARM Cloud Radars have been technically accepted by ARM as meeting specification and each radar's first data are available at this URL: http://www.archive.arm.gov/sacr/. ARM's scanning cloud radars are fully coherent dual-frequency, dual-polarization Doppler radars mounted on a common scanning pedestal.
ARM - Instrument - sirs
govInstrumentssirs govInstrumentssirs Documentation SIRS : Handbook SIRS : Instrument Mentor Monthly Summary (IMMS) reports SIRS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Solar and Infrared Radiation Station (SIRS) Instrument Categories Radiometric Picture of the Solar Infrared Radiation Station (SIRS) Picture of the Solar Infrared Radiation Station (SIRS) General Overview The Solar Infrared Radiation Station (SIRS) provides continuous measurements of broadband shortwave (solar) and longwave (atmospheric or infrared) irradiances for downwelling and upwelling components. These 1-minute data are collected from a network of stations to help determine
ARM - Instrument - aeth
govInstrumentsaeth govInstrumentsaeth Documentation AETH : Instrument Mentor Monthly Summary (IMMS) reports AETH : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Aethalometer (AETH) Instrument Categories Aerosols The Aethalometer® operates on the same principle as the Particle Soot Absorption Photometer, i.e., continuously measuring the transmission of sample air through a filter substrate and the absorbing aerosol particles collected in the filter. However, it employs more wavelengths (7) and has a movable filter (tape) to allow continuous operation over long periods without requiring filter changes. The AETH is part of the Aerosol Observing System (AOS).
ARM - Instrument - vceil
govInstrumentsvceil govInstrumentsvceil Documentation VCEIL : Handbook VCEIL : Instrument Mentor Monthly Summary (IMMS) reports VCEIL : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Vaisala Ceilometer (VCEIL) Beneficiary of Recovery Act funding. Instrument Categories Cloud Properties, Atmospheric Profiling Picture of the Vaisala Ceilometer (Model CL31) Picture of the Vaisala Ceilometer (Model CL31) General Overview The Vaisala Ceilometer (VCEIL) is a self-contained, ground-based, active, remote-sensing device designed to measure cloud-base height, vertical visibility, and potential backscatter signals by aerosols. It detects up to three cloud layers simultaneously. Model CL31 has a maximum vertical range
ARM - Instrument - twrcam
govInstrumentstwrcam govInstrumentstwrcam Documentation TWRCAM : Handbook TWRCAM : Instrument Mentor Monthly Summary (IMMS) reports TWRCAM : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Tower Camera (TWRCAM) Instrument Categories Surface Meteorology Picture of the Tower Camera (TCAM) Picture of the Tower Camera (TCAM) General Overview The tower camera in Barrow provides hourly images of ground surrounding the tower. These images may be used to determine fractional snow cover as winter arrives, for comparison with the albedo that can be calculated from downward-looking radiometers, as well as some indication of present weather. Similarly, during spring time, the camera images show the changes
ARM - Instrument - pgs
govInstrumentspgs govInstrumentspgs Documentation PGS : Handbook PGS : Instrument Mentor Monthly Summary (IMMS) reports PGS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Precision Carbon Dioxide Mixing Ratio System (PGS) Instrument Categories Atmospheric Carbon Picture of the Precision CO2 Mixing Ratio System (PGS) Picture of the Precision CO2 Mixing Ratio System (PGS) General Overview This precision gas system (PGS) makes high-accuracy, high-precision measurements of CO2 mixing ratio (ppmv dry air) in air sampled at 2, 4, 25, and 60 m above the ground. Output Datastreams pgs : Precision Gas System (CO2): 2, 4, 25, 60 m Primary Measurements The following measurements are those considered scientifically relevant.
ARM - Instrument - aos
govInstrumentsaos govInstrumentsaos Documentation AOS : Handbook AOS : Instrument Mentor Monthly Summary (IMMS) reports AOS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Aerosol Observing System (AOS) Beneficiary of Recovery Act funding. Instrument Categories Aerosols General Overview The aerosol observing system (AOS) is the primary Atmospheric Radiation Measurement (ARM) platform for in situ aerosol measurements at the surface. The principal measurements are those of the aerosol absorption and scattering coefficients as a function of the particle size and radiation wavelength. Additional measurements include those of the particle number concentration, size distribution, hygroscopic growth, and inorganic
ARM - Instrument - ccn
govInstrumentsccn govInstrumentsccn Documentation CCN : Instrument Mentor Monthly Summary (IMMS) reports CCN : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Cloud Condensation Nuclei Particle Counter (CCN) Instrument Categories Aerosols, Airborne Observations A cloud condensation nuclei counter consists of a flow column set up to create thermodynamically unstable controlled variable supersaturation conditions in the air sample stream and optically counts the particles that can form cloud droplets as a function of supersaturation. The CCN is part of the Aerosol Observing System (AOS). Output Datastreams aosccn : Aerosol Observing System (AOS): cloud condensation nuclei
ARM - Instrument - thwaps
govInstrumentsthwaps govInstrumentsthwaps Documentation THWAPS : Handbook THWAPS : Instrument Mentor Monthly Summary (IMMS) reports THWAPS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Temperature, Humidity, Wind and Pressure Sensors (THWAPS) Instrument Categories Surface Meteorology Picture of the Temperature, Humidity, Wind, and Pressure System (THWAPS) Picture of the Temperature, Humidity, Wind, and Pressure System (THWAPS) General Overview The temperature, humidity, wind, and pressure systems (THWAPS) provide surface reference values of these measurements for balloon-borne sounding system (BBSS) launches. THWAPS are located adjacent to BBSS launch sites at
ARM - Instrument - hsrl
govInstrumentshsrl govInstrumentshsrl Documentation HSRL : Instrument Mentor Monthly Summary (IMMS) reports HSRL : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : High Spectral Resolution Lidar (HSRL) Beneficiary of Recovery Act funding. Instrument Categories Aerosols, Cloud Properties The High Spectral Resolution Lidar (HSRL ) provides calibrated measurements of aerosol optical depth, volume backscatter coefficient, cross section, and depolarization. Measurements are computed from ratios of the particulate scattering to the measured molecular scattering. This provides absolute calibration and makes the calibration insensitive to dirt or precipitation on the output window. A very narrow, angular field-of-view
ARM - Instrument - tps
govInstrumentstps govInstrumentstps Documentation TPS : Handbook TPS : Instrument Mentor Monthly Summary (IMMS) reports TPS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Total Precipitation Sensor (TPS) Instrument Categories Surface Meteorology Picture of the Total Precipitation Sensor (TPS) Picture of the Total Precipitation Sensor (TPS) General Overview The total precipitation sensor (TPS) measures atmospheric temperature, horizontal wind, and precipitation. It consists of a sensor head and electronics enclosure that are integrated as a single unit. Output Datastreams tps : Total Precipitation Sensor Primary Measurements The following measurements are those considered scientifically relevant.
ARM - Instrument - clap
govInstrumentsclap govInstrumentsclap Documentation CLAP : Instrument Mentor Monthly Summary (IMMS) reports CLAP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Continuous Light Absorption Photometer (CLAP) Instrument Categories Aerosols The Continuous Light Absorption Photometer (CLAP) operates on the same principle as the Particle Soot Absorption Photometer (PSAP), i.e., continuously measuring the transmission through a filter substrate as the sample air is drawn through it. The absorbing aerosol particles are collected in the filter. The CLAP is part of the Aerosol Observing System (AOS). Locations North Slope Alaska NSA X1 Browse Data External Data (satellites and others)
ARM - Instrument - rwp
govInstrumentsrwp govInstrumentsrwp Documentation RWP : Handbook RWP : Instrument Mentor Monthly Summary (IMMS) reports RWP : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Radar Wind Profiler (RWP) Instrument Categories Atmospheric Profiling General Overview The radar wind profiler/radio acoustic sounding system (RWP/RASS), available in 915-MHz (for U.S. deployments) and 1290-MHz (for deployments outside the U.S.), measures wind profiles and backscattered signal strength between (nominally) 0.1 km and 5 km and virtual temperature profiles between 0.1 km and 2.5 km. It operates by transmitting electromagnetic energy into the atmosphere and measuring the strength and frequency of
ARM - Instrument - tracegas
govInstrumentstracegas govInstrumentstracegas Documentation TRACEGAS : Instrument Mentor Monthly Summary (IMMS) reports TRACEGAS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Trace gas concentrations (TRACEGAS) Instrument Categories Aerosols Concentrations of trace gases important for atmospheric chemistry and aerosol particle formation (e.g., carbon monoxide, various nitrogen oxides, sulfur dioxide, and ozone) typically are measured by gas filter correlation, fluorescence, or chemiluminescence. The TRACEGAS is part of the Aerosol Observing System (AOS). Output Datastreams aosco : AOS: Carbon Monoxide Analyzer aosnox : AOS: Oxides of Nitrogen Analyzer
ARM - Instrument - mwrhf
govInstrumentsmwrhf govInstrumentsmwrhf Documentation MWRHF : Handbook MWRHF : Instrument Mentor Monthly Summary (IMMS) reports MWRHF : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Microwave Radiometer - High Frequency (MWRHF) Instrument Categories Radiometric, Cloud Properties, Atmospheric Profiling Picture of the Microwave Radiometer-High Frequency (MWRHF) Picture of the Microwave Radiometer-High Frequency (MWRHF) General Overview The Microwave Radiometer-High Frequency (MWRHF) provides time-series measurements of brightness temperatures from two channels centered at 90 and 150 GHz. These two channels are sensitive to the presence of liquid water and precipitable water vapor.
ARM - Instrument - swacr
govInstrumentsswacr govInstrumentsswacr Documentation SWACR : Instrument Mentor Monthly Summary (IMMS) reports SWACR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : W-Band (95 GHz) ARM Cloud Radar, mounted to scan (SWACR) Instrument Categories Cloud Properties Output Datastreams swacrblrhi : S-WACR Boundary-layer Range-Height Indicator scan swacrcal : S-WACR calibration information swacrcwrhi : S-WACR Cross-Wind Range-Height Indicator scan swacrfpt : S-WACR - Fixed PoinTing mode swacrhsrhi : S-WACR Horizon-to-horizon Range-Height Indicator scan swacrppi : S-WACR Plan Position Indicator scan swacrspeccmaskcopol : S-WACR ARM Cloud Radar, filtered spectral
ARM - Instrument - mfrsr
govInstrumentsmfrsr govInstrumentsmfrsr Documentation MFRSR : Handbook MFRSR : Instrument Mentor Monthly Summary (IMMS) reports MFRSR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Multifilter Rotating Shadowband Radiometer (MFRSR) Instrument Categories Aerosols, Radiometric Picture of the Multi-Filter Rotating Shadowband Radiometer (MFRSR) Picture of the Multi-Filter Rotating Shadowband Radiometer (MFRSR) General Overview The multifilter rotating shadowband radiometer (MFRSR) takes spectral measurements of direct normal, diffuse horizontal and total horizontal solar irradiances. These measurements are at nominal wavelengths of 415, 500, 615, 673, 870, and 940 nm. The measurements are made at a
ARM - Instrument - mmcr
govInstrumentsmmcr govInstrumentsmmcr Documentation MMCR : Handbook MMCR : Instrument Mentor Monthly Summary (IMMS) reports MMCR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Millimeter Wavelength Cloud Radar (MMCR) Instrument Categories Cloud Properties Picture of the Millimeter Wave Cloud Radar (MMCR) Picture of the Millimeter Wave Cloud Radar (MMCR) General Overview The MMCR systems probe the extent and composition of clouds at millimeter wavelengths. The MMCR is a zenith-pointing radar that operates at a frequency of 35 GHz. The main purpose of this radar is to determine cloud boundaries (e.g., cloud bottoms and tops). This radar will also report radar reflectivity (dBZ) of the atmosphere up to 20 km.
ARM - Instrument - wacr
govInstrumentswacr govInstrumentswacr Documentation WACR : Handbook WACR : Instrument Mentor Monthly Summary (IMMS) reports WACR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : W-Band (95 GHz) ARM Cloud Radar (WACR) Instrument Categories Cloud Properties Latest version W-band ARM cloud radar Latest version W-band ARM cloud radar General Overview The W-band Atmospheric Radiation Measurement (ARM) Program Cloud Radar (WACR) systems are zenith pointing Doppler radars that probe the extent and composition of clouds at 95.04 GHz. The main purpose of this radar is to determine cloud boundaries (e.g., cloud bottoms and tops). This radar reports estimates for the first three spectra moments for each range gate
FacilitiesAMF Deployment, Ganges Valley, FacilitiesAMF Deployment, Ganges Valley, IndiaInstruments Ganges Valley Deployment AMF Home Ganges Valley Home Data Plots and Baseline Instruments Campaign Images WRF Model Simulations for GVAX Experiment Planning GVAX Full Proposal Abstract and Related Campaigns Science Plan Outreach GVAX Backgrounder (PDF, 1.4MB) News Education Flyer (PDF, 2.1MB) AMF Poster, 2011 Images Contacts V. Rao Kotamarthi Instruments : Ganges Valley, India [ Single installation ] AERI Atmospheric Emitted Radiance Interferometer Radiometric Browse Plots Browse Data [ Single installation ] AOS Aerosol Observing System Aerosols Browse Data [ Single installation ] CCN Cloud Condensation Nuclei Particle Counter Aerosols Browse Data [ Single installation ] CLAP Continuous Light Absorption Photometer Aerosols Browse Data
ARM - Instrument - rss
govInstrumentsrss govInstrumentsrss Documentation RSS : Handbook RSS : Instrument Mentor Monthly Summary (IMMS) reports RSS : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Rotating Shadowband Spectroradiometer (RSS) Instrument Categories Radiometric General Overview The Rotating Shadowband Spectroradiometer (RSS) implements the same automated shadowbanding technique used by the multifilter rotating shadowband radiometer (MFRSR), and so it too provides spectrally resolved, direct-normal, diffuse-horizontal, and total-horizontal irradiances, and can be calibrated in situ via Langley regression. The irradiance spectra are measured simultaneously at all spectral elements (pixels) in 360-nm to
ARM - Instrument - csapr
govInstrumentscsapr govInstrumentscsapr Documentation CSAPR : Handbook CSAPR : Instrument Mentor Monthly Summary (IMMS) reports CSAPR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : C-Band ARM Precipitation Radar (CSAPR) Beneficiary of Recovery Act funding. Instrument Categories Cloud Properties General Overview The C-SAPR is a C-band dual-polarization Doppler weather radar manufactured by ARC, Inc. The C-SAPR operates in a simultaneous transmit and receive (STAR) mode, meaning that the transmit signal is split so that power is transmitted on both horizontal and vertical polarizations at the same time. The C-SAPR also has the ability to transmit on a single polarization
ARM - Instrument - kasacr
govInstrumentskasacr govInstrumentskasacr Documentation KASACR : Handbook KASACR : Instrument Mentor Monthly Summary (IMMS) reports KASACR : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Ka-Band Scanning ARM Cloud Radar (KASACR) Beneficiary of Recovery Act funding. Instrument Categories Cloud Properties Note: All the Scanning ARM Cloud Radars have been technically accepted by ARM as meeting specification and each radar's first data are available at this URL: http://www.archive.arm.gov/sacr/. ARM's scanning cloud radars are fully coherent dual-frequency, dual-polarization Doppler radars mounted on a common scanning pedestal. Each pedestal includes a Ka-band radar (2kW peak power) and the deployment
Piping inspection instrument carriage
This invention, an instrument carriage for inspection of piping, comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, an instrumentation arm carried by a shaft system running from front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including, an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360[degrees] about its axis.
Hapstack, M.; Talarek, T.R.; Zollinger, W.T.; Heckendorn, F.M. II; Park, L.R.
This invention, an instrument carriage for inspection of piping, comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, an instrumentation arm carried by a shaft system running from front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including, an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360{degrees} about its axis.
Fermilab PXIE Beam Diagnostics Development and Testing at the HINS Beam Facility
Fermilab is planning the construction of a prototype front end of the Project X linac. The Project X Injector Experiment (PXIE) is expected to accelerate 1 mA CW H- beam up to 30 MeV. Some of the major goals of the project are to test a CW RFQ and H- source, a broadband bunch-by-bunch beam chopper and a low-energy superconducting linac. The successful characterization and operation of such an accelerator place stringent requirements on beamline diagnostics. These crucial beam measurements include bunch currents, beam orbit, beam phase, bunch length, transverse profile and emittance and beam halo and tails, as well as the extinction performance of the broadband chopper. This paper presents PXIE beam measurement requirements and instrumentation development plans. Presented are plans to test key instruments at the Fermilab High Intensity Neutrino Source (HINS) beam facility. Since HINS is already an operational accelerator, utilizing HINS for instrumentation testing will allow for quicker development of the required PXIE diagnostics.
Lebedev, V.A.; Shemyakin, A.V.; Steimel, J.; Wendt, M.; /Fermilab; Hanna, B.M.; Prost, L.R.; Scarpine, V.E.; /Fermilab
ARM - Campaign Instrument - dri-air
Send Campaign Instrument : Desert Research Institute Airborne Aerosol Instruments (DRI-AIR) Instrument Categories Aerosols, Airborne Observations Campaigns Aerosol IOP ...
Concepts and Glossary for the Specification of the Beam Instrumentation
In this document, we discuss a measurement chain at the conceptual level and describe the glossary we use to specify as precisely as possible its components and requirements.
Brüning, Oliver Sim; Koutchouk, Jean-Pierre; CERN. Geneva. SPS and LEP Division
Nanofabrication, Nanomanufacturing, and Nanoprocessing ...
... Directed Self-Assembly; Electron Beam Lithography (EBL); Focused Ion Beam Milling (FIB); Inspection; Interference Lithography; ...
By coupling the emitted synchrotron light into an optical fiber, it is possible to transmit the signal at substantial distances from the light port, without the need to use expensive beamlines. This would be especially beneficial in all those cases when the synchrotron is situated in areas not easily access because of their location, or due to high radiation levels. Furthermore, the fiber output can be easily switched, or even shared, between different diagnostic instruments. We present the latest results on the coupling and dispersion measurements performed at the Advanced Light Source in Berkeley. In several cases, coupling synchrotron light into optical fibers can substantially facilitate the use of beam diagnostic instrumentation that measures longitudinal beam properties by detecting synchrotron radiation. It has been discussed in with some detail, how fiberoptics can bring the light at relatively large distances from the accelerator, where a variety of devices can be used to measure beam properties and parameters. Light carried on a fiber can be easily switched between instruments so that each one of them has 100% of the photons available, rather than just a fraction, when simultaneous measurements are not indispensable. From a more general point of view, once synchrotron light is coupled into the fiber, the vast array of techniques and optoelectronic devices, developed by the telecommunication industry becomes available. In this paper we present the results of our experiments at the Advanced Light Source, where we tried to assess the challenges and limitations of the coupling process and determine what level of efficiency one can typically expect to achieve.
De Santis, S.; Yin, Y.
NSLS-II Beam Diagnostics Overview
A new 3rd generation light source (NSLS-II) is in the early stages of construction at Brookhaven National Laboratory. The NSLS-II facility will provide ultra high brightness and flux with exceptional beam stability. It presents several challenges for diagnostics and instrumentation, related to the extremely small emittance. In this paper, we present an overview of all planned instrumentation systems, results from research and development activities; and then focus on other challenging aspects.
Singh,O.; Alforque, R.; Bacha, B.; Blednykh, A.; Cameron, P.; Cheng, W.; Dalesio, L. B.; Della Penna, A. J.; doom, L.; Fliller, R. P.; Ganetis, G.; Heese, R.; Hseuh, H-C.; Johnson, E. D.; Kosciuk, b. N.; Kramer, S. L.; Krinsky, S.; Mead, J.; Ozaki, S.; Padrazo, D.; Pinayev, I.; Ravindranath, R. V.; Rose, J.; Shaftan, T.; Sharma, S.; Skaritka, J.; Tanabe, T.; Tian, Y.; Willeke, F. J.; Yu, L-H.
AC resistance measuring instrument
An auto-ranging AC resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an AC excitation signal for application to a load, including the device and the transmission line, a monitoring circuit which provides a digitally encoded signal representing the voltage across the load, and a microprocessor which operates under program control to provide an auto-ranging function by which range resistance is connected in circuit with the load to limit the load voltage to an acceptable range for the instrument, and an auto-compensating function by which compensating capacitance is connected in shunt with the range resistance to compensate for the effects of line capacitance. After the auto-ranging and auto-compensation functions are complete, the microprocessor calculates the resistance of the load from the selected range resistance, the excitation signal, and the load voltage signal, and displays of the measured resistance on a digital display of the instrument. 8 figs.
Hof, P.J.
A Moored Profiling Instrument*
The specifications and performance of a moored vertical profiling instrument, designed to acquire near-full-ocean-depth profile time series data at high vertical resolution, are described. The 0.8-m-diameter by 0.4-m-wide device utilizes a ...
K. W. Doherty; D. E. Frye; S. P. Liberatore; J. M. Toole
On Combining Instruments
Suppose two instruments I0 and I1 measure the same quantity with the same resolution, where it is known that I0 is more reliable. The second, I1, is assumed a distortion of I0 in some sense. A statistical method is outlined where 1) the ...
Konstantinos Fokianos; Benjamin Kedem; Jing Qin; Jeffrey L. Haferman; David A. Short
Instrumentation Environment User's Guide
Contents Introduction iii 1 Concepts 1 1.1 Events : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 1 1.2 Event Traces : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 1 1.3 Timestamps : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 1 1.4 Processor Numbers : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 2 1.5 Trace Buffers : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 2 1.6 Trace Library Synchronization : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 2 1.7 Trace Output : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 3 2 Instrumenting 4 2.1 Before Initialization : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 4 2.1.1
Roger Noe; Revised Ruth; A. Aydt
AFRD - Center for Beam Physics
Center for Beam Physics Center for Beam Physics Home Organization Outreach and Diversity Highlights Safety Links Intramural Group photo of our staff CBP staff, May 2011 CBP in the News: Read about an innovation in super-precise timing and synchronization; and a look toward the next generation of electron guns with responsiveness and brightness needed by future free-electron lasers such as those in the Next Generation Light Source initiative. Who We Are and What We Do The Center for Beam Physics (CBP) is a resource for meeting the challenges of accelerator science, and a source of many innovative concepts, within the Accelerator and Fusion Research Division. We have core expertise in accelerator physics and theory, accelerator modeling using high performance computing, and instrumentation,
Early instrumentation projects at the SSC
Conceptual designs for some SSC instrumentation is given. Stripline beam position monitors, appropriate for cryogenic operation are described, along with plans for their A/D conversion and recording. A global timing system based on fibre optics is described; it is to be capable of {plus minus}100 psec accuracy over many tens of kilometers. Stabilization is patterned after a scheme in use at CERN. Timing pulses (roughly 60 MHz) as well as pulses synchronized to the various frequency modulated RF systems are distributed and scaled by digital clocks situated at those locations where accurate timing is required. Finally, a digital control circuit to be used for synchronizing beam transfer the Low Energy Booster to the Medium Energy Booster is described. It is based on controlling the relative phases of the two RF systems even though one of the frequencies is variable. 4 refs., 10 figs.
Martin, D.J.; Mestha, L.K.; Miller, S.A.; Talman, R.
ORNL Neutron Sciences Instrument Fact Sheets
of each neutron scattering instrument at ORNL. You can also view SNS Instrument and HFIR Instrument pages that go to the related instrument's web pages. Detailed information...
SNS Instrument Systems | ORNL Neutron Sciences
instrument layout. Click for details. Instruments at the Spallation Neutron Source SNS currently has 13 instruments available for users. Each instrument is designed to complement...
Tokamak x ray diagnostic instrumentation
Three classes of x-ray diagnostic instruments enable measurement of a variety of tokamak physics parameters from different features of the x-ray emission spectrum. (1) The soft x-ray (1 to 50 keV) pulse-height-analysis (PHA) diagnostic measures impurity concentrations from characteristic line intensities and the continuum enhancement, and measures the electron temperature from the continuum slope. (2) The Bragg x-ray crystal spectrometer (XCS) measures the ion temperature and neutral-beam-induced toroidal rotation velocity from the Doppler broadening and wavelength shift, respectively, of spectral lines of medium-Z impurity ions. Impurity charge state distributions, precise wavelengths, and inner-shell excitation and recombination rates can also be studied. X rays are diffracted and focused by a bent crystal onto a position-sensitive detector. The spectral resolving power E/..delta..E is greater than 10/sup 4/ and time resolution is 10 ms. (3) The x-ray imaging system (XIS) measures the spatial structure of rapid fluctuations (0.1 to 100 kHZ) providing information on MHD phenomena, impurity transport rates, toroidal rotation velocity, plasma position, and the electron temperature profile. It uses an array of silicon surface-barrier diodes which view different chords of the plasma through a common slot aperture and operate in current (as opposed to counting) mode. The effectiveness of shields to protect detectors from fusion-neutron radiation effects has been studied both theoretically and experimentally.
Hill, K.W.; Beiersdorfer, P.; Bitter, M.; Fredrickson, E.; Von Goeler, S.; Hsuan, H.; Johnson, L.C.; Liew, S.L.; McGuire, K.; Pare, V.
The Coherent X-ray Imaging (CXI) Instrument at the Linac Coherent Light Source (LCLS)
The Linac Coherent Light Source (LCLS) has become the first ever operational hard X-ray Free Electron Laser in 2009. It will operate as a user facility capable of delivering unique research opportunities in multiple fields of science. The LCLS and the LCLS Ultrafast Science Instruments (LUSI) construction projects are developing instruments designed to make full use of the capabilities afforded by the LCLS beam. One such instrument is being designed to utilize the LCLS coherent beam to image with high resolution any sub-micron object. This instrument is called the Coherent X-ray Imaging (CXI) instrument. This instrument will provide a flexible optical system capable of tailoring key beam parameters for the users. A suite of shot-to-shot diagnostics will also be provided to characterize the beam on every pulse. The provided instrumentation will include multi-purpose sample environments, sample delivery and a custom detector capable of collecting 2D data at 120 Hz. In this article, the LCLS will be briefly introduced along with the technique of Coherent X-ray Diffractive Imaging (CXDI). A few examples of scientific opportunities using the CXI instrument will be described. Finally, the conceptual layout of the instrument will be presented along with a description of the key requirements for the overall system and specific devices required.
Boutet, Sebastien
BEAM LINE BEAM LINE 45 W ILHELM ROENTGEN'S INITIAL DISCOVERY of X-radiation in 1895 led immediately to practical applications in medicine. Over the next few decades X rays proved to be an invaluable tool for the investigation of the micro-world of the atom and the development of the quantum theory of matter. Almost a century later, telescopes designed to detect X-radiation are indispensable for understanding the structure and evolution of the macro-world of stars, galaxies, and the Universe as a whole. The X-Ray Universe by WALLACE H. TUCKER X-ray images of the Universe are strikingly different from the usual visible-light images. 46 SUMMER 1995 did not think: I investigated." Undeterred by NASA's rejection of a proposal to search for cosmic X-radiation, Giacconi persuaded the
ARM - Instrument - wpdn
govInstrumentswpdn govInstrumentswpdn Documentation WPDN : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Wind Profiler Demo Network (WPDN) Instrument Categories Atmospheric Profiling General Overview Data from an array of wind profilers are provided from NOAA's Forecast Systems Laboratory (FSL) Demonstration Division . These data include wind profiles, spectral moments, RASS temperature profiles, GPS, and surface observations. Output Datastreams 06fslwpdnmet : Wind Profiler Demo Network (WPDN): 6-min meteorological data 06fslwpdnrass : Wind Profiler Demo Network (WPDN): 6-min RASS data 06wpdnmmts : Wind Profiler Demo Network (WPDN): 6-min wind moments 60fslwpdnmet : Wind Profiler Demo Network (WPDN): meteorology data,
ARM - Instrument - usdarad
govInstrumentsusdarad govInstrumentsusdarad Documentation USDARAD : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : US Department of Agriculture (USDA) Radiation Monitoring Data (USDARAD) Instrument Categories Radiometric Picture of the USDA radiometer at the SGP site Picture of the USDA radiometer at the SGP site General Overview The USDA UV-B Monitoring and Research Program is a program of the U.S. Department of Agriculture's Cooperative State Research, Education and Extension Service (CSREES). The program was initiated in 1992, through a grant to Colorado State University, to provide information on the geographical distribution and temporal trends of UVB (ultraviolet -B)
ARM - Instrument - avhrr
govInstrumentsavhrr govInstrumentsavhrr Documentation AVHRR : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Advanced Very High Resolution Radiometer (AVHRR) Instrument Categories Satellite Observations General Overview Measurements from the Advanced Very High Resolution Radiometer (AVHRR) on the NOAA polar orbiting satellites taken over the NSA, SHB, SGP, and TWP sites are available for distribution to the ARM community. The files are in HDF. The AVHRR data from the Australian Bureau of Meteorology (BOM) Darwin site have not yet been converted to HDF. The raw data are in ASDA (Australian Satellite Data Archive) Format.. Output Datastreams avhrr10 : AVHRR: albedo and brightness temp., NOAA-10 Satellite
ARM - Campaign Instrument - ecor
govInstrumentsecor govInstrumentsecor Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Eddy Correlation Flux Measurement System (ECOR) Instrument Categories Surface/Subsurface Properties Campaigns Boundary Layer Cloud IOP [ Download Data ] North Slope Alaska, 2005.07.11 - 2005.08.07 Mixed-Phase Arctic Cloud Experiment [ Download Data ] North Slope Alaska, 2004.09.27 - 2004.10.21 Water Cycle Pilot Study Intensive Observations [ Download Data ] Southern Great Plains, 2002.04.01 - 2002.06.30 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance
ARM - Campaign Instrument - aerosmassspec
govInstrumentsaerosmassspec govInstrumentsaerosmassspec Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Aerosol Mass Spectrometer (AEROSMASSSPEC) Instrument Categories Aerosols, Atmospheric Carbon, Airborne Observations Campaigns 2006 MAX-Mex-Megacity Aerosol eXperiment - Mexico City [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2006.03.03 - 2006.03.28 2007 Cumulus Humilis Aerosol Process Study (CHAPS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2007.06.04 - 2007.06.25 2008 VAMOS Ocean-Cloud-Atmos-Land Study (VOCALS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2008.10.14 - 2008.11.13 Carbonaceous Aerosol and Radiative Effects Study (CARES) [ Download Data ]
ARM - Campaign Instrument - cpc
govInstrumentscpc govInstrumentscpc Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Condensation Particle Counter (CPC) Instrument Categories Aerosols Campaigns 1998 Phoenix Air Quality Study [ Download Data ] Off Site Campaign : various, including non-ARM sites, 1998.05.17 - 1998.06.09 2007 Cumulus Humilis Aerosol Process Study (CHAPS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2007.06.04 - 2007.06.25 2007 Cumulus Humilis Aerosol Process Study (CHAPS) [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2007.06.04 - 2007.06.25 Application of the ARM Mobile Facility (AMF) to Study the Aerosol Indirect Effects in China [ Download Data ] Shouxian, Anhui, China; Mobile Facility, 2008.05.15 - 2008.12.29
ARM - Campaign Instrument - ronbrown
govInstrumentsronbrown govInstrumentsronbrown Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : NOAA Research Vessel Ron Brown (RONBROWN) Instrument Categories Aerosols, Radiometric, Cloud Properties, Ocean Observations, Surface Meteorology, Atmospheric Profiling Campaigns Nauru99 Campaign [ Download Data ] Tropical Western Pacific, 1999.06.16 - 1999.07.15 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Sea surface temperature Aerosol absorption Liquid water content Particle number concentration Cloud fraction
ARM - Instrument - ncepgfs
govInstrumentsncepgfs govInstrumentsncepgfs Documentation NCEPGFS : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : National Centers for Environment Prediction Global Forecast System (NCEPGFS) Instrument Categories Derived Quantities and Models General Overview Since 2001, NCEP NWP forecasts (global spectral model) have been processed by Hualu Pan at NCEP/EMC and archived by Stephen Krueger at University of Utah to produce station-like column outputs at locations corresponding to the ARM and other field campaign sites. All data from Jan 2001 up to now have been re-processed by Fanglin Yang for easy access, for comparison with ARM observations, and for driving single column models and cloud resolving
ARM - Campaign Instrument - ecmwfdiag
govInstrumentsecmwfdiag govInstrumentsecmwfdiag Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : European Centre for Medium Range Weather Forecasts Diagnostic Analyses (ECMWFDIAG) Instrument Categories Derived Quantities and Models Campaigns Fall 1997 SCM IOP [ Download Data ] Southern Great Plains, 1997.09.15 - 1997.10.05 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Ice water content Soil surface temperature Vertical velocity Liquid water content Cloud fraction Soil moisture Precipitation Horizontal wind Atmospheric temperature
ARM - Campaign Instrument - mirai
govInstrumentsmirai govInstrumentsmirai Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : JAMSTEC Research Vessel Mirai (MIRAI) Instrument Categories Radiometric, Cloud Properties, Ocean Observations, Surface Meteorology, Atmospheric Profiling Campaigns Nauru99 Campaign [ Download Data ] Tropical Western Pacific, 1999.06.16 - 1999.07.15 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Sea surface temperature Liquid water content Cloud fraction CO2 concentration Backscatter depolarization ratio Hydrometeor size
ARM - Campaign Instrument - asd
govInstrumentsasd govInstrumentsasd Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Analytical Spectral Devices Field Spectroradiometer (ASD) Instrument Categories Radiometric Campaigns Aerosol IOP [ Download Data ] Southern Great Plains, 2003.05.01 - 2003.05.31 Surface Albedo IOP [ Download Data ] Southern Great Plains, 2004.02.09 - 2004.02.13 Surface Albedo IOP [ Download Data ] Southern Great Plains, 2004.10.20 - 2004.10.26 Surface spectral albedo [ Download Data ] Southern Great Plains, 2002.08.14 - 2002.08.20 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance
ARM - Campaign Instrument - sfcflux
govInstrumentssfcflux govInstrumentssfcflux Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Surface Flux (SFCFLUX) Instrument Categories Radiometric, Surface Meteorology, Surface/Subsurface Properties Campaigns Tropical Warm Pool - International Cloud Experiment (TWP-ICE) [ Download Data ] Tropical Western Pacific, 2006.01.21 - 2006.02.13 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes. CO2 flux Soil surface temperature CO2 concentration Soil moisture Precipitation Horizontal wind Net broadband total irradiance
ARM - Instrument - tao
govInstrumentstao govInstrumentstao Documentation TAO : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Tropical Atmosphere Ocean from Buoys (TAO) Instrument Categories Radiometric, Ocean Observations, Surface Meteorology General Overview These data files contain 2-minute average radiation and 10-minute average meteorology, precipitation, salinity and sea surface temperature data from the seven TAO buoys located on the 165E line (8n, 5n, 2n, 0n, 2s, 5s, 8s) of the TAO Buoy Array. Data from these buoys are stored in monthly netCDF files that are generated by PMEL. The radiation data were obtained from TAO Array moorings through a collaborative effort between NOAA/PMEL/TAO and
ARM - Instrument - sonde
govInstrumentssonde govInstrumentssonde Documentation SONDE : Handbook SONDE : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Balloon-Borne Sounding System (SONDE) Beneficiary of Recovery Act funding. Instrument Categories Atmospheric Profiling General Overview The balloon-borne sounding system (SONDE) provides in situ measurements (vertical profiles) of both the thermodynamic state of the atmosphere, and the wind speed and direction. During some field campaigns, sonde operations from multiple stations around a central location with baseline measurements, like a mobile facility, can provide important constraints for model simulations. At the ARM sites, sondes are launched at the following
ARM - Instrument - eta
govInstrumentseta govInstrumentseta Documentation ETA : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Eta Model Runs (ETA) Instrument Categories Derived Quantities and Models General Overview NOAA's National Centers for Environmental Prediction run a regional numerical weather analysis and forecast system that covers the entire North American Continent. The data archived by ARM since 1993-06-16 come from the 00Z and 12Z model runs and include the 0h-analysis and 6h-forecast data resulting in 4 files per day. The model used to be called "ETA", which derived from the model's vertical coordinate known as the "eta" or "step-mountain" coordinate. In 2005, the
ARM - Campaign Instrument - pdlidar
govInstrumentspdlidar govInstrumentspdlidar Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Polarization Diversity Lidar (PDLIDAR) Instrument Categories Aerosols, Cloud Properties, Atmospheric Profiling Campaigns CRYSTAL-FACE [ Download Data ] Off Site Campaign : various, including non-ARM sites, 2002.06.26 - 2002.08.01 M-PACE - Polarization Diversity Lidar (PDL) [ Download Data ] North Slope Alaska, 2004.09.01 - 2004.10.21 Remote Cloud Sensing (RCS) Field Evaluation [ Download Data ] Southern Great Plains, 1994.04.01 - 1994.05.31 Primary Measurements Taken The following measurements are those considered scientifically relevant. Refer to the datastream (netcdf) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance
ARM - Instrument - gms
govInstrumentsgms govInstrumentsgms Documentation GMS : XDC documentation ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Geostationary Meteorological Satellite (GMS) Note: gms is currently inactive and/or retired. Active Dates 1996.10.01 - 2003.02.16 Instrument Categories Satellite Observations General Overview GMS-5 satellite images are taken over the Tropical Western Pacific (TWP), over each of the TWP sites. The raw data are downlinked to the SeaSpace Corp. receiving station at the University of Hawaii. The GMS-5 was launched in March 1995 into a geostationary orbit above 0°N, 140°E. It carries a Visible and Infrared Spin Scan Radiometer (VISSR) with four channels, one
ARM - Campaign Instrument - asti
govInstrumentsasti govInstrumentsasti Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Absolute Solar Transmittance Interferometer (ASTI) Instrument Categories Radiometric Campaigns ASTI [ Download Data ] Southern Great Plains, 1997.06.01 - 1997.06.30 ASTI [ Download Data ] Southern Great Plains, 1998.07.01 - 1998.08.27 ASTI (Absolute Solar Transmittance Interferometer) IOP [ Download Data ] Southern Great Plains, 2000.09.26 - 2000.10.09 Absolute Solar Transmittance Interferometer [ Download Data ] Southern Great Plains, 1997.09.01 - 1997.09.30 Absolute Solar Transmittance Interferometer (ASTI) [ Download Data ] Southern Great Plains, 1996.04.01 - 1996.05.31 Absolute Solar Transmittance Interferometer (ASTI) [ Download Data ]
Instrumentation and diagnostics
This Technology Status Report describes research and accomplishments for the Instrumentation and Diagnostics (I D) Projects within the Advanced Research and Technology Development (AR TD) Program of the United States Department of Energy (DOE) Office of Fossil Energy (FE). Process understanding and control can be improved through the development of advanced instrumentation and diagnostics. The thrust of the I D Projects is to further develop existing measurement and control techniques for application to advanced coal-based technologies. Project highlights are: an inductively coupled plasma (ICP) instrument has been developed to analyze trace elements in gasification and combustion process streams. An in situ two-color Mie scattering technique with LSS can simultaneously measure the size, velocity, and elemental composition of coal particles during combustion. A high-temperature, fluorescence thermometry technique has accurately measured gas temperatures during field testing in combustion and gasification environments. Expert systems have been developed to improve the control of advanced coal-based processes. Capacitance flowmeters were developed to determine the mass flowrate, solid volume fraction, and particle velocities of coal slurries. 32 refs., 9 figs.
Nakaishi, C.V.; Bedick, R.C.
Accelerator beam profile analyzer
A beam profile analyzer employing sector or quadrant plates each servo controlled to outline the edge of a beam.
Godel, Julius B. (Bayport, NY); Guillaume, Marcel (Grivegnee, BE); Lambrecht, Richard M. (East Quogue, NY); Withnell, Ronald (East Setauket, NY)
Cold Atoms Could Replace Hot Gallium in Focused Ion ...
... The high energies needed to focus gallium for milling tasks end up burying small amounts in the sample, contaminating the material. ...
Instrumentation for WEC Testing
Ean A. Amon Ean A. Amon Northwest National Marine Renewable Energy Center MHK Instrumentation Workshop, NREL, July 2012 The Northwest National Marine Renewable Energy Center * A partnership between Oregon State University, the University of Washington, & the National Renewable Energy Lab. * Develop a full range of capabilities to support wave and tidal energy development, from small-scale lab and tank systems to full-scale ocean facilities. * Center activities are structured to: * facilitate device commercialization, * inform regulatory and policy decisions, * close key gaps in understanding. Funding for NNMREC is provided by DOE, OSU, UW and multiple partners NNMREC Scaling, Development and Evaluation Resources
LISA technology and instrumentation
This article reviews the present status of the technology and instrumentation for the joint ESA/NASA gravitational wave detector LISA. It briefly describes the measurement principle and the mission architecture including the resulting sensitivity before focussing on a description of the main payload items, such as the interferomtric measurement system, comprising the optical system with the optical bench and the telescope, the laser system, and the phase measurement system; and the disturbance reduction system with the inertial sensor, the charge control system, and the micropropulsion system. The article touches upon the requirements for the different subsystems that need to be fulfilled to obtain the overall sensitivity.
Jennrich, O
TMT Science and Instruments
To meet the scientific goals of the Thirty Meter Telescope Project, full diffraction-limited performance is required from the outset and hence the entire observatory is being designed, as a system, to achieve this. The preliminary design phases of the telescope and the first light adaptive optic facility are now approaching completion so that much better predictions of the system performance are possible. The telescope design and instrumentation are summarized in this presentation, with a brief description of some of the scientific programs that are foreseen.
David Crampton; Luc Simard; David Silva
Beam Loss Control for the Fermilab Main Injector
From 2005 through 2012, the Fermilab Main Injector provided intense beams of 120 GeV protons to produce neutrino beams and antiprotons. Hardware improvements in conjunction with improved diagnostics allowed the system to reach sustained operation at 400 kW beam power. Losses were at or near the 8 GeV injection energy where 95% beam transmission results in about 1.5 kW of beam loss. By minimizing and localizing loss, residual radiation levels fell while beam power was doubled. Lost beam was directed to either the collimation system or to the beam abort. Critical apertures were increased while improved instrumentation allowed optimal use of available apertures. We will summarize the impact of various loss control tools and the status and trends in residual radiation in the Main Injector.
Brown, Bruce C
Instrumentation for the Energy Frontier
The Instrumentation Frontier was set up as a part of the Snowmass 2013 Community Summer Study to examine the instrumentation R&D needed to support particle physics research over the coming decade. This report summarizes the findings of the Energy Frontier subgroup of the Instrumentation Frontier.
Ulrich Heintz; Daniela Bortoletto; Marcus Hohlmann; Thomas LeCompte; Ron Lipton; Meenakshi Narain; Andrew White
Geothermal high temperature instrumentation applications
A quick look at the geothermal industry shows a small industry producing about $1 billion in electric sales annually. The industry is becoming older and in need of new innovative solutions to instrumentation problems. A quick look at problem areas is given along with basic instrumentation requirements. The focus of instrumentation is on high temperature electronics.
Normann, R.A. [Sandia National Labs., Albuquerque, NM (United States); Livesay, B.J. [Livesay Consultants (United States)
Design Analyses and Shielding of HFIR Cold Neutron Scattering Instruments
Research reactor geometries and special characteristics present unique dosimetry analysis and measurement issues. The introduction of a cold neutron moderator and the production of cold neutron beams at the Oak Ridge National Laboratory High Flux Isotope Reactor have created the need for modified methods and devices for analyzing and measuring low energy neutron fields (0.01 to 100 meV). These methods include modifications to an MCNPX version to provide modeling of neutron mirror reflection capability. This code has been used to analyze the HFIR cold neutron beams and to design new instrument equipment that will use the beams. Calculations have been compared with time-of-flight measurements performed at the start of the neutron guides and at the end of one of the guides. The results indicate that we have a good tool for analyzing the transport of these low energy beams through neutron mirror and guide systems for distance up to 60 meters from the reactor. (authors)
Gallmeier, F.X.; Selby, D.L.; Winn, B.; Stoica, D.; Jones, A.B.; Crow, L. [Neutron Sciences Directorate, Oak Ridge National Laboratory (United States)
The QUIET Instrument
The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the Cosmic Microwave Background, targeting the imprint of inflationary gravitational waves at large angular scales ({approx}1{sup o}). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4m side-fed Dragonian telescope. The polarimeters which form the focal planes use a highly compact design based on High Electron Mobility Transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter array, with a central frequency of 43.1 GHz, has the best sensitivity (69 {mu}Ks{sup 1/2}) and the lowest instrumental systematic errors ever achieved in this band, contributing to the tensor-to-scalar ratio at r < 0:1. The 84-element W-band polarimeter array has a sensitivity of 87 {mu}Ks{sup 1/2} at a central frequency of 94.5 GHz. It has the lowest systematic errors to date, contributing at r < 0:01. The two arrays together cover multipoles in the range {ell} {approx} 25 -- 975. These are the largest HEMT-based arrays deployed to date. This article describes the design, calibration, performance of, and sources of systematic error for the instrument.
Bischoff, C.; /Chicago U., EFI /Harvard-Smithsonian Ctr. Astrophys.; Brizius, A.; /Chicago U., EFI /Bonn, Max Planck Inst., Radioastron.; Buder, I.; /Chicago U., EFI /Harvard-Smithsonian Ctr. Astrophys.; Chinone, Y.; /KEK, Tsukuba /Tohoku U.; Cleary, K.; /Caltech; Dumoulin, R.N.; /Columbia U., CBA; Kusaka, A.; /Chicago U., EFI /Princeton U.; Monsalve, R.; /Miami U.; Naess, S.K.; /Oslo U.; Newburgh, L.B.; /Columbia U., CBA /Princeton U.; Nixon, G.; /Princeton U. /Caltech
Instrumented Pipeline Initiative
This report summarizes technical progress achieved during the cooperative agreement between Concurrent Technologies Corporation (CTC) and U.S. Department of Energy to address the need for a for low-cost monitoring and inspection sensor system as identified in the Department of Energy (DOE) National Gas Infrastructure Research & Development (R&D) Delivery Reliability Program Roadmap.. The Instrumented Pipeline Initiative (IPI) achieved the objective by researching technologies for the monitoring of pipeline delivery integrity, through a ubiquitous network of sensors and controllers to detect and diagnose incipient defects, leaks, and failures. This report is organized by tasks as detailed in the Statement of Project Objectives (SOPO). The sections all state the objective and approach before detailing results of work.
Thomas Piro; Michael Ream
Soldering instrument safety improvements
It is an object of the present invention to make soldering instruments safer and easier to use. According to one aspect of the present invention, a non-heatsinking, protective shield is provided around the soldering tip of the solder iron. This heat shield covers the iron`s hot tip throughout the soldering process with the exception of the time needed to perform an actual solder connection using the tip. The shield protects the user or nearby personnel from harm when the soldering iron is at elevated temperatures (500{degrees}F to 800{degrees}F).Moreover, the shield is capable of preventing fires which might result if the iron`s tip inadvertently comes into contact with an object that can be easily ignited, e.g. paper. In addition, an air vacuum system is incorporated into the shield to remove the solder smoke.
Kosslow, W.J.; Giron, R.W.
Simple beam profile monitor
An inexpensive beam profile monitor is based on the well proven rotating wire method. The monitor can display beam position and shape in real time for particle beams of most energies and beam currents up to 200{mu}A. Beam shape, position cross-section and other parameters are displayed on a computer screen.
Gelbart, W.; Johnson, R. R.; Abeysekera, B. [ASD Inc. Garden Bay, BC (Canada); Best Theratronics Ltd Ottawa Ontario (Canada); PharmaSpect Ltd., Burnaby BC (Canada)
ARM - Campaign Instrument - dri-gnd
Send Campaign Instrument : Desert Research Institute Ground-Based Aerosol Instruments (DRI-GND) Instrument Categories Aerosols Campaigns Aerosol IOP Download Data Southern...
Carbonaceous Aerosol Study Using Advanced Particle Instrumentation
Advanced Particle Instrumentation A Dissertation submittedUsing Advanced Particle Instrumentation by Li Qi Doctor ofinto the online instrumentation. In brief, an isokinetic
Qi, Li
12564 Extended Summary INSTRUMENTATION FOR A RADON RESEARCHNO. W-7405-ENG-48. INSTRUMENTATION FOR A RADON RESEARCHradon daughters. The system's instrumentation is capable of
Nazaroff, W.W.
Millimeter-wave polarimetry instrumentation and analysis
Society of Photo-Optical Instrumentation Engineers (SPIE)of Photo-Optical Instrumentation Engineers (SPIE) ConferenceWave Polarimetry Instrumentation and Analysis A dissertation
Bierman, Evan M.
Coherent electron cooling proof of principle instrumentation design
The goal of the Coherent Electron Cooling Proof-of-Principle (CeC PoP) experiment being designed at RHIC is to demonstrate longitudinal (energy spread) cooling before the expected CD-2 for eRHIC. The scope of the experiment is to longitudinally cool a single bunch of 40 GeV/u gold ions in RHIC. This paper will describe the instrumentation systems proposed to meet the diagnostics challenges. These include measurements of beam intensity, emittance, energy spread, bunch length, position, orbit stability, and transverse and temporal alignment of electron and ion beams.
Gassner D. M.; Litvinenko, V.; Michnoff, R.; Miller, T.; Minty, M.; Pinayev, I.
Relativistic electron beam generator
A relativistic electron beam generator for laser media excitation is described. The device employs a diode type relativistic electron beam source having a cathode shape which provides a rectangular output beam with uniform current density.
Mooney, L.J.; Hyatt, H.M.
NK Muon Beam
The NK Muon Beam will be a modified version of the existing NT beam line. The decision to employ a modified version of the NT beam line was made based on considerations of cost and availability of the beam line. Preliminary studies considered use of other beam lines, e.g., the NW beam line, and even of moving the bubble chamber with its superconducting coils but were rejected for reasons such as cost, personnel limitations, and potential conflicts with other users.
Koizumi, G.
ARM - Instrument - s-table
govInstrumentss-table govInstrumentss-table Documentation S-TABLE : Instrument Mentor Monthly Summary (IMMS) reports S-TABLE : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Stabilized Platform (S-TABLE) Instrument Categories Ocean Observations For ship-based deployments, some instruments require actively stabilized platforms to compensate for the ship's motion, especially rotations around the long axis of the ship (roll), short axis (pitch), and, for some instruments, vertical axis (yaw). ARM currently employs two types of stabilized platforms: one electrically controlled for lighter instruments that includes yaw control (dubbed RPY for Roll, Pitch, Yaw) and one
Capabilities of the FNPB Instrument | ORNL Neutron Sciences
Capabilities of the FNPB Instrument Capabilities of the FNPB Instrument Fundamental Physics with Cold and Ultracold Neutrons Fundamental Beamline The fundamental physics beam line showing the "cold neutron" area inside the SNS Experiment Hall and the external UCN facility. For scale, the existing n+ p → d + γ apparatus is shown in the "cold beam" position, and the proposed neutron electric dipole moment apparatus is shown in the external building. Cold neutrons and ultracold neutrons (UCNs) have been employed in a wide variety of investigations that shed light on important issues in nuclear, particle, and astrophysics in the determination of fundamental constants and in the study of fundamental symmetry violation. In many cases, these experiments provide information not available from existing
Arbin Instruments | Open Energy Information
Open Energy Info (EERE)
Place College Station, Texas Zip 77845 Product Hi-tech developer and manufacturer of energy storage and energy conversion testing equipment. References Arbin Instruments1...
NVLAP Radiation Detection Instruments LAP
Radiation Detection Instruments LAP. Leticia Pibida uses a hand-held radiation detection device to check cargo. Photo: Copyright Robert Rathe. ...
LANSCE | Lujan Center | Instruments | NPDF
articles since the instrument shutter opened in 2002, in fields as diverse as geochemistry, actinide research, complex oxides, bulk metallic glasses, and hydrogen storage...
ARM - Campaign Instrument - nrc-convair580
Send Campaign Instrument : National Research Council - Canada CONVAIR 580 (NRC-CONVAIR580) Instrument Categories Airborne Observations Campaigns Indirect and...
Status of RHIC head-on beam-beam compensation project
Two electron lenses are under construction for RHIC to partially compensate the head-on beam-beam effect in order to increase both the peak and average luminosities. The final design of the overall system is reported as well as the status of the component design, acquisition, and manufacturing. An overview of the RHIC head-on beam-beam compensation project is given in [1], and more details in [2]. With 2 head-on beam-beam interactions in IP6 and IP8, a third interaction with a low-energy electron beam is added near IP10 to partially compensate the the head-on beam-beam effect. Two electron lenses are under construction, one for each ring. Both will be located in a region common to both beams, but each lens will act only on one beam. With head-on beam-beam compensation up to a factor of two improvement in luminosity is expected together with a polarized source upgrade. The current RHIC polarized proton performance is documented in Ref. [4]. An electron lens (Fig. 1) consists of an DC electron gun, warm solenoids to focus the electron beam during transport, a superconducting main solenoid in which the interaction with the proton beam occurs, steering magnets, a collector, and instrumentation. The main developments in the last year are given below. The experimental program for polarized program at 100 GeV was expected to be finished by the time the electron lenses are commissioned. However, decadal plans by the RHIC experiments STAR and PHENIX show a continuing interest at both 100 GeV and 250 GeV, and a larger proton beam size has been accommodated in the design (Tab. 1). Over the last year beam and lattice parameters were optimized, and RHIC proton lattices are under development for optimized electron lens performance. The effect of the electron lens magnetic structure on the proton beam was evaluated, and found to be correctable. Experiments were done in RHIC and the Tevatron.
Fischer, W.; Anerella, M.; Beebe, E.; Bruno, D.; Gassner, D.M.; Gu, X.; Gupta, R.C.; Hock, J.; Jain, A.K.; Lambiase, R.; Liu, C.; Luo, Y.; Mapes, M.; Montag, C.; Oerter, B.; Okamura, M.; Pikin, A.I.; Raparia, D.; Tan, Y.; Than, R.; Thieberger, P.; Tuozzolo, J.; Zhang, W.
Instrument development continues in Oak Ridge
Peer review panels composed of 80 external scientists recently visited Oak Ridge National Laboratory (ORNL) to review almost 700 proposals for experiments on 23 instruments at the Spallation Neutron Source (SNS) and High Flux Isotope Reactor (HFIR). These were proposed for the time period from January-June 2012. About 40% of the proposals were approved for beam time and 20% were placed on an alternate list if time becomes available. The Hybrid Spectrometer HYSPEC at SNS began its commissioning in September 2011. HYSPEC is otpimized for studying low energy dynamics in single-crystal samples using a broad variety of sample environments, and is equipped with a polarization analysis capability. It is expected to be available for users on a limited basis in the second half of 2012. The detector tank of CORELLI has been installed on beamline 9 at SNS. Now that the tank is in place, banks of neutron detectors and boron carbide shielding will be installed around the interior. CORELLI is optimized to probe complex disorder in crystalline materials through diffuse scattering from single-crystal samples. It will begin commissioning in 2014. CORELLI is one of four instruments being developed under the SING II (SNS Instruments Next Generation II) project. The others are the Macromolecular Neutron Diffractometer (MANDI), the Vibrational Spectrometer (VISION, scheduled to begin commissioning in 2012), and the Time of Flight Ultra Small Angle Neutron Scattering Instrument (TOF-USANS). The single crystal neutron diffractometer IMAGINE, was deliverd to HFIR in October 2011. Preliminary testing has been carried out. IMAGINE will provide atomic resolution information on chemical, organic, metallo-organic and protein single crystals that will enable their chemical, physical and biological structure and function to be understood. This instrument will benefit scientists with interests in pharmaceuticals, minerals and other inorganic crystals, small molecules, molecular organo-metallic crystals and metal-organic frameworks (MOFs) molecular crystal structures. The quasi-Laue geometry, combined with a large solid angle detector, will enable rapid data collection from crystals with volume < 1mm{sup 1} and unit cell < 100 {angstrom}. Construction and installation of the optical system is in progress. Commissioning is expected to start in April 2012.
Curtis Instruments | Open Energy Information
Curtis Instruments Curtis Instruments Jump to: navigation, search Logo: Curtis Instruments Name Curtis Instruments Address 200 Kisco Ave. Place Mount Kisco, New York Zip 10549 Sector Services Product Electric Vehicle control and instrumentation components Website http://curtisinstruments.com/ Coordinates 41.215661°, -73.726709° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":41.215661,"lon":-73.726709,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
High Availability Instrumentation Packaging Standards for the ILC and Detectors
ILC designers are exploring new packaging standards for Accelerator Controls and Instrumentation, particularly high-speed serial interconnect systems for intelligent instruments versus the existing parallel backplanes of VME, VXI and CAMAC. The High Availability Advanced Telecom Computing Architecture (ATCA) system is a new industrial open standard designed to withstand single-point hardware or software failures. The standard crate, controller, applications module and sub-modules are being investigated. All modules and sub-modules are hot-swappable. A single crate is designed for a data throughput in communications applications of 2 Tb/s and an Availability of 0.99999, which translates into a downtime of five minutes per year. The ILC is planning to develop HA architectures for controls, beam instrumentation and detector systems.
Downing, R.W.; Larsen, R.S.; /SLAC
The BEAR program NRL plasma physics instrumentation measurements
The BEAR program was a joint effort to launch, and demonstrate the feasibility of operating, a 1 MeV 10 ma Neutral Particle Beam (NPB) accelerator from a space platform. The accelerator design and manufacture were the responsibility of Los Alamos National Lab (LANL); diagnostics associated with accelerator operation and beam-plasma effects were also to be undertaken by LANL and NRL. Payload Integration and Telemetry was provided by the Air Force Geophysical Lab (AFGL) and Northeastern University (NEU). Beam effects on the local plasma in addition to accelerator produced vehicle effects (e.g., charging) were the responsibility of NRL as outlined herein. The BEAR rocket was launched successfully during the early morning hours of July 13 from White Sands Missile Range, White Sands, N.M. The NRL contribution to this effort included three instrument packages designed to diagnose beam-plasma and vehicle-plasma interactions. The instruments included: (1) Langmuir probe (LP) design consisting of 4 separate sensors; (2) High voltage (HIV) Langmuir Probe designed to monitor vehicle charging through current polarity changes; and (3) Plasma Wave Receive (PWR) designed to characterize the plasma wave emissions covering a broad frequency range from near DC to 50 MHz.
Walker, D.N.; Baumback, M.M.; Haas, D.G.; Rodriguez, P.; Siefring, C.L.; Doggett, R.A. [Naval Research Lab., Washington, DC (United States)
During stores, the beam-beam interaction has a significant impact on the beam and luminosity lifetimes in RHIC. This was observed in heavy ion, and even more pronounced in proton collisions. Observations include measurements of beam-beam induced tune shifts, lifetime and emittance growth measurements with and without beam-beam interaction, and background rates as a function of tunes. In addition, RHIC is currently the only hadron collider in which strong-strong beam-beam effects can be seen. Coherent beam-beam modes were observed, and suppressed by tune changes. In this article we summarize the most important beam-beam observations made during stores so far.
Electron-Beam Microcharacterization Centers | U.S. DOE Office of Science
Office of Science (SC) Website
Electron-Beam Microcharacterization Centers Electron-Beam Microcharacterization Centers Scientific User Facilities (SUF) Division SUF Home About User Facilities X-Ray Light Sources Neutron Scattering Facilities Nanoscale Science Research Centers Electron-Beam Microcharacterization Centers Accelerator & Detector Research & Development Principal Investigators' Meetings Scientific Highlights Construction Projects BES Home User Facilities Electron-Beam Microcharacterization Centers Print Text Size: A A A RSS Feeds FeedbackShare Page This research area supports three electron-beam microcharacterization centers, which operate as user facilities, work to develop next-generation electron-beam instrumentation, and conduct corresponding research. Operating funds are provided to enable expert scientific interaction and
The design of accelerator components such as magnets, accelerator cavities and beam instruments tends to be a fairly standardized and collective effort within the particle accelerator community with well established performance, reliability and, in some cases, even budgetary criteria. Beam stop design, by contrast, has been comparatively subjective historically with much more general goals. This lack of rigor has lead to a variety of facility implementations with limited standardization and minimal consensus on approach to development within the particle accelerator community. At the Spallation Neutron Source (SNS), for example, there are four high power beam stops in use, three of which have significantly different design solutions. This paper describes the design of a new off-momentum beam stop for the SNS. The technical description of the system will be complemented by a discussion of design methodology. This paper presented an overview of the new SNS HEBT off-momentum beam stop and outlined a methodology for beam stop system design. The new beam stop consists of aluminium and steel blocks cooled by a closed-loop forced-air system and is expected to be commissioned this summer. The design methodology outlined in the paper represents a basic description of the process, data, analyses and critical decisions involved in the development of a beam stop system.
Polsky, Yarom [ORNL; Plum, Michael A [ORNL; Geoghegan, Patrick J [ORNL; Jacobs, Lorelei L [ORNL; Lu, Wei [ORNL; McTeer, Stephen Mark [ORNL
Adjustable extender for instrument module
A blank extender module used to mount an instrument module in front of its console for repair or test purposes has been equipped with a rotatable mount and means for locking the mount at various angles of rotation for easy accessibility. The rotatable mount includes a horizontal conduit supported by bearings within the blank module. The conduit is spring-biased in a retracted position within the blank module and in this position a small gear mounted on the conduit periphery is locked by a fixed pawl. The conduit and instrument mount can be pulled into an extended position with the gear clearing the pawl to permit rotation and adjustment of the instrument.
Sevec, J.B.; Stein, A.D.
Microchip and wedge ion funnels and planar ion beam analyzers using same
Electrodynamic ion funnels confine, guide, or focus ions in gases using the Dehmelt potential of oscillatory electric field. New funnel designs operating at or close to atmospheric gas pressure are described. Effective ion focusing at such pressures is enabled by fields of extreme amplitude and frequency, allowed in microscopic gaps that have much higher electrical breakdown thresholds in any gas than the macroscopic gaps of present funnels. The new microscopic-gap funnels are useful for interfacing atmospheric-pressure ionization sources to mass spectrometry (MS) and ion mobility separation (IMS) stages including differential IMS or FAIMS, as well as IMS and MS stages in various configurations. In particular, "wedge" funnels comprising two planar surfaces positioned at an angle and wedge funnel traps derived therefrom can compress ion beams in one dimension, producing narrow belt-shaped beams and laterally elongated cuboid packets. This beam profile reduces the ion density and thus space-charge effects, mitigating the adverse impact thereof on the resolving power, measurement accuracy, and dynamic range of MS and IMS analyzers, while a greater overlap with coplanar light or particle beams can benefit spectroscopic methods.
Shvartsburg, Alexandre A; Anderson, Gordon A; Smith, Richard D
Tevatron beam-beam compensation project progress
In this paper, we report the progress of the Tevatron Beam-Beam Compensation (BBC) project [1]. Electron beam induced proton and antiproton tuneshifts have been reported in [2], suppression of an antiproton emittance growth has been observed, too [1]. Currently, the first electron lens (TEL1) is in operational use as the Tevatron DC beam cleaner. We have made a lot of the upgrades to improve its stability [3]. The 2nd Tevatron electron lens (TEL2) is under the final phase of development and preparation for installation in the Tevatron.
Shiltsev, V.; Zhang, X.L.; Kuznetsov, G.; Pfeffer, H.; Saewert, G.; /Fermilab; Zimmermann, F.; /CERN; Tiunov, M.; /Novosibirsk, IYF; Bishofberger, K.; /UCLA; Bogdanov, I.; Kashtanov, E.; Kozub, S.; Sytnik, V.; Tkachenko, L.; /Serpukhov, IHEP
A device is described for defining a beam of high energy particles wherein the means for defining the beam in the horizontal and vertical dimension are separately adjustable and the defining members are internally cooled. In general, the device comprises a mounting block having a central opening through which the beam is projected, means for rotatably supporting two pairs of beam- forming members, passages in each member for the flow of coolant; the beam- forming members being insulated from each other and the block, and each having an end projecting into the opening. The beam-forming members are adjustable and may be cooperatively positioned to define the beam passing between the end of the members. To assist in projecting and defining the beam, the member ends have individual means connected thereto for indicating the amount of charge collected thereon due to beam interception.
Langsdorf, A.S. Jr.
EMSL: Capabilities: Instrument Development Laboratory
Instrument Development Laboratory Instrument Development Laboratory The mission of the Instrument Development Laboratory (IDL) is to design, develop, and deploy advanced state-of-the-art instrument systems and custom application software in support of the ongoing experimental research efforts within EMSL. IDL staff design and develop much of the custom hardware and software used at EMSL, and provide the critical support necessary to rapidly modify or adapt a user's system to help the user achieve the world-class results they expect at EMSL. Additional Information IDL Home Meet the IDL Experts IDL Innovations IDL Brochure IDL staff provide electrical engineering expertise in high-voltage, radiofrequency, and high-speed analog and digital systems; digital signaling processing and FPGA technology; and rapid prototyping. In
4-ID-D Instrumentation
4-ID-D Instrumentation Detectors Integrating Counting Area Diffractometors 8-Circle 4Tesla Magnet 13 Tesla Magnet Focussing Zone Plate Optics K-B Mirror System Temperature Control...
Instrumented architectural level emulation technology
The advent of general purpose emulators as tools for computer architecture research and system development is briefly traced. The concepts of an architectural level emulation and of instrumenting an emulation are introduced. An operational emulation-based ...
Harrison R. Burris
LUSI :: LCLS Ultrafast Science Instruments
Go Home Project Pages LUSI Instruments Uniqueness of FEL X-rays X-ray FEL Science About LCLS Science with LCLS Calendar & Meetings Contact Us Office of ScienceU.S. DOE Current...
A Review of VLBI Instrumentation
The history of VLBI is summarized with emphasis on the technical aspects. A summary of VLBI systems which are in use is given, and an outlook to the future of VLBI instrumentation.
W. Alef
ARM - Campaign Instrument - sp2
(SP2) Instrument Categories Aerosols Campaigns Carbonaceous Aerosol and Radiative Effects Study (CARES) Download Data McClellan AFB, Sacramento, CA, 2010.06.02 - 2010.06.28...
Vehicle Technologies Office: ACEM Instrument Achieves Significant
ACEM Instrument Achieves ACEM Instrument Achieves Significant Performance Milestone to someone by E-mail Share Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on Facebook Tweet about Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on Twitter Bookmark Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on Google Bookmark Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on Delicious Rank Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on Digg Find More places to share Vehicle Technologies Office: ACEM Instrument Achieves Significant Performance Milestone on AddThis.com... ACEM Instrument Achieves Significant Performance Milestone
LANSCE | Lujan Center | Instruments | PCS
Protein Crystallography Station | PCS Protein Crystallography Station | PCS Structural Enzymology The Protein Crystallography Station (PCS) at LANSCE is a high performance beam line that is funded by DOE OBER. It forms the core of a capability for joint neutron and X-ray macromolecular structure and function determination. The PCS is the first protein crystallography beam line to be built at a spallation neutron source and is still the only resource of its kind in North America. The beam-line exploits the pulsed nature of spallation neutrons and a large electronic detector in order to efficiently collect wavelength resolved Laue patterns using all available neutrons in the white beam (0.7 - 7 Ă… wavelength band). Neutron crystallography is a powerful technique for locating H atoms that can be hard to detect using X-rays. The PCS therefore provides unique
Instrumentation for Increased Power Flow
This report is the second Technical Update of the Instrumentation for Managing Increased Power Flow project, part of EPRI's Increased Power Flow (IPF) program. The project, initiated in 2006 and expected to continue for several years, studies the feasibility of new instrumentation to support increased power flow strategies. In 2007 the work focused on two primary developments: the Backscatter Sensor for the real-time measurement of transmission line temperature and current and the Emissivity Test Instrum...
Beam position monitor
An apparatus for determining the position of an x-ray beam relative to a desired beam axis where the apparatus is positioned along the beam path so that a thin metal foil target intersects the x-ray beam generating fluorescent radiation. A PIN diode array is positioned so that a portion of the fluorescent radiation is intercepted by the array resulting in a series of electrical signals from the PIN diodes making up the array. The signals are then analyzed and the position of the x-ray beam is determined relative to the desired beam path.
Alkire, Randy W.; Rosenbaum, Gerold; Evans, Gwyndaf
Instrumentness for creativity mediation, materiality & metonymy
We introduce the concept instrumentness as a quality of human-computer interfaces. Instrumentness points to the way musical instruments are controlled and conceptualized through values such as virtuosity and playability, which are important for computer-mediated ... Keywords: activity theory, computer mediated creativity, instrumental interactions, instrumentness, interface aesthetics, materiality, mediation, metonymy, music composition
Olav W. Bertelsen; Morten Breinbjerg; Sřren Pold
Status of the START neutral beam project
A major advantage of spherical tokamaks is their potential for achieving high beta and high plasma density in modest sized plasmas using low magntic field. Given this combination of low field and high density, neutral beam injection can provide effective auxiliary heating for the next generation of spherical tokamaks. A neutral beam injector, shipped recently from Oak Ridge National Laboratory as part of an ongoing collaboration on spherical tokamak research, has now been installed onto the START (Small Tight Aspect Ratio Tokamak) experiment at Culham Laboratory. This should provide the first experimental test of neutral injectino into spherical tokamak plasmas, and allow the effects of neutral beam heating on energy confinement and beta values to be assessed at low aspect ratios. This experiment also extends the data base of confinement scaling for tokamaks in general. Modifications to START have included in-situ machining of a new 31 cm diameter port for NBI, plus the installation of a new graphite neutral beam stop equipped with thermocouples to provide beam profile and shinethrough diagnosis. The major modification to the NBI beamline has been the installation of an optical fiber coupled control and instrumentation system. The injector will be operated without cryopumps in a 'volume pumped' configuration, and should provide 0.5 MW of injected hydrogen neutral power at a beam energy of 40 keV for 20 ms pulses. The status of the installation and commissioning program is reported.
Nightingale, M. P. S. [Association EURATOM-CCFE, Abingdon, UK; Peng, Yueng Kay Martin [ORNL
Challenges in optics for Extremely Large Telescope instrumentation
We describe and summarize the optical challenges for future instrumentation for Extremely Large Telescopes (ELTs). Knowing the complex instrumental requirements is crucial for the successful design of 30-60m aperture telescopes. After all, the success of ELTs will heavily rely on its instrumentation and this, in turn, will depend on the ability to produce large and ultra-precise optical components like light-weight mirrors, aspheric lenses, segmented filters, and large gratings. New materials and manufacturing processes are currently under study, both at research institutes and in industry. In the present paper, we report on its progress with particular emphasize on volume-phase-holographic gratings, photochromic materials, sintered silicon-carbide mirrors, ion-beam figuring, ultra-precision surfaces, and free-form optics. All are promising technologies opening new degrees of freedom to optical designers. New optronic-mechanical systems will enable efficient use of the very large focal planes. We also provide exploratory descriptions of "old" and "new" optical technologies together with suggestions to instrument designers to overcome some of the challenges placed by ELT instrumentation.
P. Spanň; F. M. Zerbi; C. J. Norrie; C. R. Cunningham; K. G. Strassmeier; A. Bianco; P. A. Blanche; M. Bougoin; M. Ghigo; P. Hartmann; L. Zago; E. Atad-Ettedgui; B. Delabre; H. Dekker; M. Melozzi; B. Snyders; R. Takke; D. D. Walker
New beam-position and phase monitors are under development for the linac at the Los Alamos Neutron Science Center (LANSCE). Transducers have been designed and are being fabricated. We are considering many options for the electronic instrumentation to process the signals and provide position and phase data with the necessary precision and flexibility to serve the various required functions. We'll present the various options under consideration for instrumentation along with the advantages and shortcomings of these options.
McCrady, Rodney C. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Power, John F. [AOT-IC
New beam-position and phase monitors are under development for the linac at the Los Alamos Neutron Science Center (LANSCE.) Transducers have been designed and are being installed. We are considering many options for the electronic instrumentation to process the signals and provide position and phase data with the necessary precision and flexibility to serve the various required functions. We'll present the various options under consideration for instrumentation along with the advantages and shortcomings of these options.
McCrady, Rodney C. [Los Alamos National Laboratory; Gilpatrick, John D. [Los Alamos National Laboratory; Watkins, Heath A. [Los Alamos National Laboratory
Fossil Plant Instrumentation and Control Guidelines
This report summarizes an earlier study performed on instrument calibration analysis and will serve as a guideline for performing statistical analysis of instrument calibration data for plants that desire to monitor and improve instrument performance.
NEPA CX Determination SS-SC-10-01 for End Station Test Beam (ESTB)
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
0-01 for End Station Test Beam (ESTB) 0-01 for End Station Test Beam (ESTB) National Environmental Policy Act (NEPA) Categorical Exclusion (CX) Determination A. SSO NEPA Control #: SS-SC-10-01 B. Brief Description of Proposed Action: The End Station Test Beam (ESTB) is a new experimental facility that will use 5Hz of the 120 hz 13.6 GeV electron beam from the existing Linac Coherent Light Source (LCLS) to restore test beam capabilities in End Station A (ESA), an existing building at SLAC. In Stage I of this proposal, four new kicker magnets will be added to the Beam Switchyard (BSY) to divert a small fraction of the existing LCLS beam pulses to the A-line for beam instrumentation and accelerator physics studies at full electron beam intensity. The Personnel Protection System in ESA will be
Beam injection into RHIC
During the RHIC sextant test in January 1997 beam was injected into a sixth of one of the rings for the first time. The authors describe the injection zone and its bottlenecks. They report on the commissioning of the injection system, on beam based measurements of the kickers and the application program to steer the beam.
Fischer, W.; Hahn, H.; MacKay, W.W.; Satogata, T.; Tsoupas, N.; Zhang, W.
Electron beam device
This patent pertains to an electron beam device in which a hollow target is symmetrically irradiated by a high energy, pulsed electron beam about its periphery and wherein the outer portion of the target has a thickness slightly greater than required to absorb the electron beam pulse energy. (auth)
Beckner, E.H.; Clauser, M.J.
Readiness Issues for Emergency Response Instrumentation
Issues in maintaining readiness of instruments for deployment and use in emergency response situation often differ from those in maintaining instruments for normal operations. Confunding circumstances include use of non-availability of check sources, ensuring instruments are always in calibration and operable, possible use of instruments in different climates, packaging of instrumentation for deployment, transport of instrumentation and check sources, and ensuring users are familiar with instruments. Methods and procedures for addressing these issues are presented. Instrumentation used for survey, in situ measurements, electronic dosimetry, and air conditioning are discussed.
C.A. Riland; D.R. Bowman; R.J. Tighe
Instrumented SSH on NERSC Systems
Security » Instrumented SSH Security » Instrumented SSH Instrumented SSH on NERSC Systems NERSC uses a modified version of SSH on all of our systems that allows us to record and analyze the content of interactive SSH sessions. Why are We Doing This? Credential theft represents the single greatest threat to security here at NERSC. We are addressing this problem by analyzing user command activity and looking for behavior that is recognizably hostile. Until SSH came into widespread use, it was trivial to monitor login sessions and analyze them for mischievous activity. Furthermore, this kind of intrusion detection proved to be very effective with few "false positives". Using this version of SSH at NERSC, we are simply recovering that capability. However, we recognize the importance of being candid about
HTGR Measurements and Instrumentation Systems
This report provides an integrated overview of measurements and instrumentation for near-term future high-temperature gas-cooled reactors (HTGRs). Instrumentation technology has undergone revolutionary improvements since the last HTGR was constructed in the United States. This report briefly describes the measurement and communications needs of HTGRs for normal operations, maintenance and inspection, fuel fabrication, and accident response. The report includes a description of modern communications technologies and also provides a potential instrumentation communications architecture designed for deployment at an HTGR. A principal focus for the report is describing new and emerging measurement technologies with high potential to improve operations, maintenance, and accident response for the next generation of HTGRs, known as modular HTGRs, which are designed with passive safety features. Special focus is devoted toward describing the failure modes of the measurement technologies and assessing the technology maturity.
Ball, Sydney J [ORNL; Holcomb, David Eugene [ORNL; Cetiner, Mustafa Sacit [ORNL
ARM - Instrument - co2flx
govInstrumentsco2flx govInstrumentsco2flx Documentation CO2FLX : Handbook CO2FLX : Instrument Mentor Monthly Summary (IMMS) reports CO2FLX : Data Quality Assessment (DQA) reports ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Instrument : Carbon Dioxide Flux Measurement Systems (CO2FLX) Instrument Categories Atmospheric Carbon General Overview The Southern Great Plains (SGP) carbon dioxide flux (CO2 flux) measurement systems provide half-hour average fluxes of CO2, H2O (latent heat), and sensible heat. The fluxes are obtained by the eddy covariance technique, which computes the flux as the mean product of the vertical wind component with CO2 and H2O densities, or estimated virtual temperature. A three-dimensional sonic anemometer is used to obtain the orthogonal wind
Leiderdorp Instruments | Open Energy Information
Leiderdorp Instruments Leiderdorp Instruments Jump to: navigation, search Name Leiderdorp Instruments Place Leiderdorp, Netherlands Zip NL2350 Sector Solar Product Leiderdorp designs electronics hardware and software, including output monitoring devices for PV and solar passive systems. Coordinates 52.156174°, 4.534218° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":52.156174,"lon":4.534218,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
A probe is described for intercepting a desired portion of a beam of charged particles and for indicating the spatial disposition of the beam. The disclosed probe assembly includes a pair of pivotally mounted vanes moveable into a single plane with adjacent edges joining and a calibrated mechanical arrangement for pivoting the vancs apart. When the probe is disposed in the path of a charged particle beam, the vanes may be adjusted according to the beam current received in each vane to ascertain the dimension of the beam.
Chesterman, A.W.
Diagnostics of the ITER neutral beam test facility
The ITER heating neutral beam (HNB) injector, based on negative ions accelerated at 1 MV, will be tested and optimized in the SPIDER source and MITICA full injector prototypes, using a set of diagnostics not available on the ITER HNB. The RF source, where the H{sup -}/D{sup -} production is enhanced by cesium evaporation, will be monitored with thermocouples, electrostatic probes, optical emission spectroscopy, cavity ring down, and laser absorption spectroscopy. The beam is analyzed by cooling water calorimetry, a short pulse instrumented calorimeter, beam emission spectroscopy, visible tomography, and neutron imaging. Design of the diagnostic systems is presented.
Pasqualotto, R.; Serianni, G.; Agostini, M.; Brombin, M.; Dalla Palma, M.; Gazza, E.; Pomaro, N.; Rizzolo, A.; Spolaore, M.; Zaniol, B. [Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, Corso Stati Uniti 4, I-35127 Padova (Italy); Sonato, P.; De Muri, M. [Consorzio RFX, Associazione EURATOM-ENEA sulla Fusione, Corso Stati Uniti 4, I-35127 Padova (Italy); Dipartimento di Ingegneria Elettrica, Padova University (Italy); Croci, G. [Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Milano (Italy); Gorini, G. [Istituto di Fisica del Plasma, Associazione EURATOM-ENEA-CNR, Milano (Italy); CNISM, Dipartimento di Fisica, Universita degli Studi di Milano-Bicocca, Milano (Italy)
EUROv Super Beam Studies
Neutrino Super Beams use conventional techniques to significantly increase the neutrino beam intensity compared to the present neutrino facilities. An essential part of these facilities is an intense proton driver producing a beam power higher than a MW. The protons hit a target able to accept the high proton beam intensity. The produced charged particles are focused by a system of magnetic horns towards the experiment detectors. The main challenge of these projects is to deal with the high beam intensity for many years. New high power neutrino facilities could be build at CERN profiting from an eventual construction of a high power proton driver. The European FP7 Design Study EUROv, among other neutrino beams, studies this Super Beam possibility. This paper will give the latest developments in this direction.
Dracos, Marcos [IPHC, Universite de Strasbourg, CNRS/IN2P3, F-67037 Strasbourg (France)
Getting Beam Time at HFIR and SNS | ORNL Neutron Sciences
Apply for Beam Time at HFIR and SNS Apply for Beam Time at HFIR and SNS Apply for Beam Time at HFIR and SNS 2014B Call for Proposals Proposal call 2014B All available beam lines will accept proposals through February 26, 2014 Beam time is granted through our general user program, which is open to all. In addition, we have opportunities for extended collaboration through programs such as internships and postdoctoral programs. The instruments at HFIR and SNS can be used free of charge with the understanding that researchers will publish their results, making them available to the scientific community. Our facilities are also available for proprietary research for a fee. ORNL User Portal The ORNL User Portal gives you access to all the resources you need as a new or returning user, such as the proposal system, data access and
In this course, given at the school in 3 parts of 75 minutes each, we will discuss the physics of particle detection, the basic designs and working principles of detectors, and, as an example with more details, some detectors for particle identification.
Jurgen Engelfried
Goodwill Instrument | Open Energy Information
Goodwill Instrument Goodwill Instrument Jump to: navigation, search Logo: Goodwill Instrument Name Goodwill Instrument Address No.7-1, Jhongsing Road., Place Tucheng Dist., New Taipei City Zip 236 Sector Efficiency, Solar Product Electronic Load, DC Power Supply, AC Power Supply, Oscilloscope, Digital Multi-Meter, Spectrum Analyzer Stock Symbol 2423 TPE 2423 Year founded 1975 Number of employees 501-1000 Phone number +886 2 22680389 Website http://www.goodwill.com.tw Coordinates 24.964545035469°, 121.42334461212° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":24.964545035469,"lon":121.42334461212,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Vacuum Enhanced Cutaneous Biopsy Instrument
A syringe-like disposable cutaneous biopsy instrument equipped with a tubular blade at its lower end, and designed so that a vacuum is created during use, said vacuum serving to retain undeformed a plug of tissue cut from a patient's skin.
Collins, Joseph
Capabilities of the SNAP Instrument | ORNL Neutron Sciences
Capabilities of the SNAP Instrument Capabilities of the SNAP Instrument As general note, we have now moved to the MANTID software package for most of our data reduction processing. This makes the reduction of raw data a much easier and automated process for most applications. Current General Capabilities Disordered materials studies (glasses/liquids/sloppy crystals at HP): low-resolution wide Q-range mode, 0.6beam intensity falls off rapidly at
beam intensity falls off rapidly at
The Instrument Development Group MACS Detector System ...
Page 1. The Instrument Development Group Bloomberg Center for Physics & Astronomy · Johns Hopkins University · Baltimore · Maryland ...
International Conference Synchrotron Radiation Instrumentation SRI `94
This report contains abstracts for the international conference on Synchrotron Radiation Instrumentation at Brookhaven National Laboratory.
Not Available
Bio-SANS Instrument Team | ORNL Neutron Sciences
Instrument Team Instrument team Bio-SANS Team (left to right): Qiu Zhang, Student Volker Urban, Lead Instrument Scientist Sai Venkatesh Pingali, Instrument Scientist Shuo Qian,...
Neutron dosimetry at SLAC: Neutron sources and instrumentation
This report summarizes in detail the dosimetric characteristics of the five radioisotopic type neutron sources ({sup 238}PuBe, {sup 252}Cf, {sup 238}PuB, {sup 238}PuF{sub 4}, and {sup 238}PuLi) and the neutron instrumentation (moderated BF{sub 3} detector, Anderson-Braun (AB) detector, AB remmeter, Victoreen 488 Neutron Survey Meter, Beam Shut-Off Ionization Chamber, {sup 12}C plastic scintillator detector, moderated indium foil detector, and moderated and bare TLDs) that are commonly used for neutron dosimetry at the Stanford Linear Accelerator Center (SLAC). 36 refs,. 19 figs.
Liu, J.C.; Jenkins, T.M.; McCall, R.C.; Ipe, N.E.
Instrument Front-Ends at Fermilab During Run II
The optimization of an accelerator relies on the ability to monitor the behavior of the beam in an intelligent and timely fashion. The use of processor-driven front-ends allowed for the deployment of smart systems in the field for improved data collection and analysis during Run II. This paper describes the implementation of the two main systems used: National Instruments LabVIEW running on PCs, and WindRiver's VxWorks real-time operating system running in a VME crate processor.
Meyer, Thomas; Slimmer, David; Voy, Duane; /Fermilab
Minimizing Instrumental Broadening of the Drop Size Distribution with the M-Fast-FSSP
A modified version of the Fast-FSSP (the so-called M-Fast-FSSP) is introduced. It allows minimization of the instrumental broadening of measured cloud drop size distributions caused by laser beam inhomogeneities. This is achieved by applying a ...
Sebastian Schmidt; Katrin Lehmann; Manfred Wendisch
Closing plenary summary of working group 4 instrumentation and controls for ERL2011
Working group 4 was charged with presentations and discussions on instrumentation and controls with regards to Energy Recovery Linacs (ERL). There were 4 sessions spanning 3.5 hours in which 7 talks were delivered, the first being an invited plenary presentation. The time allotted for each talk was limited to 20-25 minutes in order to allow 5-10 minutes for discussion. Most of the talks were held in joint session with working group 5 (Unwanted Beam Loss). This format was effective for the purpose of this workshop. A final series of discussion sessions were also held with working group 5. Summary of the working group 4 activities, presented in the closing plenary session. We had a plenary presentation on operational performance, experience, and future plans at the existing ERL injector prototype at Cornell. This included instrumentation data, controls system configurations, as well as description of future needs. This was followed by four talks from KEK and RIKEN/SPring-8 that described electron beam instrumentation already in use or under development that can be applied to ERL facilities. The final talks described the ERLs under construction at KEK and BNL. The format of having joint sessions with working group 5 was beneficial as there were a significant number of common topics and concerns with regards to the causes of beam loss, instrumentation hardware, and techniques used to measure and analyze beam loss.
Gassner, D.; Obina, T.
Strong-strong beam-beam simulation on parallel computer
The beam-beam interaction puts a strong limit on the luminosity of the high energy storage ring colliders. At the interaction points, the electromagnetic fields generated by one beam focus or defocus the opposite beam. This can cause beam blowup and a reduction of luminosity. An accurate simulation of the beam-beam interaction is needed to help optimize the luminosity in high energy colliders.
Qiang, Ji
Wastewater treatment plant instrumentation handbook. Final report
Instruments are required for proper operation of wastewater plants. To be of use the instruments must be operable and maintainable. This requires care in the selection, application and installation of instruments and control equipment. Contents of the handbook address the how-to of designing and applying instrumentation and controls for waste treatment operations. Special focus is given to problems, causes and solutions. The handbook covers instruments, valves and pumps commonly used in wastewater plants.
Manross, R.C.
Design and performance of the ASAXS instrument at the Advanced Photon Source.
The SAXS instrument on the high brilliance undulator beam line (ID-12, BESSRC-CAT) at APS has been designed to produce high-resolution scattering patterns in the millisecond time domain. This instrument is equipped with a 20 cm x 20 cm position sensitive gas detector and a 15 cm x 15 cm high-resolution position sensitive CCD mosaic detector. A photodiode detector mounted on a 3 mm diameter beam stop permits quick alignment of the instrument as well as precise measurement of the transmitted beam intensity. The ease of changing the sample to detector distance and tuning of x-ray energy enables easy access to different Q ranges. With this instrument we routinely measure data in a Q range of 0.001 to 1 {angstrom}{sup {minus}1}. The exposure time with the CCD detector varies from 0.1 second to 10 sec depending on the scattering cross-section of the samples. Techniques to interface ancillary equipment for time-resolved studies and software for faster online analysis of the data have also been developed. We have obtained excellent data on the unfolding of proteins in the millisecond time domain, ASAXS of metallic alloys by using this instrument.
Seifert, S.; Thiyagarajan, P.; Tiede, D. M.; Winans, R. E.
Gas Gas and Thermal Photon Scattering in the NLC Main Linac as a Source of Beam Halo P. Tenenbaum LCC-Note-0051 12-JAN-2001 Abstract Scattering of primary beam electrons off of residual gas molecules or blackbody radiation photons in the NLC main linac has been identified as a potential source of beam haloes which must be collimated in the beam delivery system. We consider the contributions from four scat- tering mechanisms: inelastic thermal-photon scattering, elastic beam-gas (Coulomb) scattering inelastic beam-gas (Bremsstrahlung) scattering, and atomic-electron scattering. In each case we develop the formalism necessary to estimate the backgrounds generated in the main linac, and determine the expected number of off-energy or large-amplitude particles from each process, assuming a main linac injection energy of 8 GeV and extraction energy of 500 GeV. 1 Introduction The
Ion Beam Materials Lab
Facilities » Facilities » Ion Beam Materials Lab Ion Beam Materials Lab A new research frontier awaits! Our door is open and we thrive on mutually beneficial partnerships, collaborations that drive innovations and new technologies. April 12, 2012 Ion Beam Danfysik Implanter High Voltage Terminal. Contact Yongqiang Wang (505) 665-1596 Email Devoted to the characterization and modification of surfaces through the use of ion beams The Ion Beam Materials Laboratory (IBML) is a Los Alamos National Laboratory resource devoted to the characterization and modification of surfaces through the use of ion beams. The IBML provides and operates the core facilities, while supporting the design and implementation of specific apparati needed for experiments requested by users of the facility. The result is a facility with
Particle beam injection system
This invention provides a poloidal divertor for stacking counterstreaming ion beams to provide high intensity colliding beams. To this end, method and apparatus are provided that inject high energy, high velocity, ordered, atomic deuterium and tritium beams into a lower energy, toroidal, thermal equilibrium, neutral, target plasma column that is magnetically confined along an endless magnetic axis in a strong restoring force magnetic field having helical field lines to produce counterstreaming deuteron and triton beams that are received bent, stacked and transported along the endless axis, while a poloidal divertor removes thermal ions and electrons all along the axis to increase the density of the counterstreaming ion beams and the reaction products resulting therefrom. By balancing the stacking and removal, colliding, strong focused particle beams, reaction products and reactions are produced that convert one form of energy into another form of energy.
Jassby, Daniel L. (Princeton, NJ); Kulsrud, Russell M. (Princeton, NJ)
Comparison of SOFC Cathode Microstructure Quantified using X-ray Nanotomography and Focused Ioni Beam-scanning Electron Microscopy
X-ray nanotomography and focused ion beam scanning electron microscopy (FIB-SEM) have been applied to investigate the complex 3D microstructure of solid oxide fuel cell (SOFC) electrodes at spatial resolutions of 45 nm and below. The application of near edge differential absorption for x-ray nanotomography and energy selected backscatter detection for FIB-SEM enable elemental mapping within the microstructure. Using these methods, non-destructive 3D x-ray imaging and FIB-SEM serial sectioning have been applied to compare three-dimensional elemental mapping of the LSM, YSZ, and pore phases in the SOFC cathode microstructure. The microstructural characterization of an SOFC cathode is reported based on these measurements. The results presented demonstrate the viability of x-ray nanotomography as a quantitative characterization technique and provide key insights into the SOFC cathode microstructure.
G Nelson; W Harris; J Lombardo; J Izzo Jr.; W Chiu; P Tanasini; M Cantoni; J Van herle; C Comninellis; et al.
First Beam Waist Measurements in the Final Focus Beam Line at the KEK Accelerator Test Facility
The ATF2 project is the final focus system prototype for the ILC and CLIC linear collider projects, with a purpose to reach a 37 nm vertical beam size at the interaction point using compact optics based on a novel scheme of local chromaticity correction. Construction of all components and installation were completed at the end of 2008. An initial commissioning phase followed in 2009, using larger than nominal {beta} functions at the interaction point, corresponding to reduced demagnification factors in comparison to the design, to limit effects from higher-order optical aberrations and hence simplify beam tuning procedures while key instrumentation was being tested and calibrated. In this paper, first measurements of dispersion and Twiss parameters are presented based on scanning the beam during this period with a set of tungsten wires located just behind the interaction point, using two complementary analysis methods.
Bai, Sha; /Beijing, Inst. High Energy Phys.; Aryshev, Alexander; /KEK, Tsukuba; Bambade, Philip; /KEK, Tsukuba /Orsay, IPN; McCormick, Doug; /SLAC; Bolzon, Benoit; /Annecy, LAPP; Gao, Jie; /Beijing, Inst. High Energy Phys.; Tauchi, Toshiaki; /KEK, Tsukuba; Zhou, Feng; /SLAC
The E-lens test bench for RHIC beam-beam compensation
To compensate for the beam-beam effects from the proton-proton interactions at IP6 and IP8 in the Relativistic Heavy Ion Collider (RHIC), we are fabricating two electron lenses that we plan to install at RHIC IR10. Before installing the e-lenses, we are setting-up the e-lens test bench to test the electron gun, collector, GS1 coil, modulator, partial control system, some instrumentation, and the application software. Some e-lens power supplies, the electronics for current measurement will also be qualified on test bench. The test bench also was designed for measuring the properties of the cathode and the profile of the beam. In this paper, we introduce the layout and elements of the e-lens test bench; and we discuss its present status towards the end of this paper.
Gu X.; Altinbas, F.Z.; Aronson, J.; Beebe, E. et al
BEAMS Crossword Puzzle
puzzle with words from the BEAMS Vocabulary List. Download this Activity Lab Pages Puzzle Puzzle Puzzle (cont) Puzzle (cont) Sample AnswersAnswer Key Ansewr Key Ansewr Key...
Electron Beam Melting (EBM)
Oct 18, 2011 ... Additive Manufacturing of Metals: Electron Beam Melting (EBM) I Sponsored by: MS&T Organization Program Organizers: Ian D. Harris, EWI; ...
Electron Beam Melting
Oct 9, 2012 ... Additive Manufacturing of Metals: Electron Beam Melting Program Organizers: Ian Harris, EWI; Ola Harrysson, North Carolina State University; ...
Broad beam ion implanter
An ion implantation device for creating a large diameter, homogeneous, ion beam is described, as well as a method for creating same, wherein the device is characterized by extraction of a diverging ion beam and its conversion by ion beam optics to an essentially parallel ion beam. The device comprises a plasma or ion source, an anode and exit aperture, an extraction electrode, a divergence-limiting electrode and an acceleration electrode, as well as the means for connecting a voltage supply to the electrodes.
Leung, Ka-Ngo (Hercules, CA)
LANSCE | Lujan Center | Instruments | ASTERIX
Asterix Asterix Surfaces and Interfaces Asterix is a reflectometer/diffractometer/grazing-incidence-SANS/SESAME-enabled-SANS spectrometer that is primarily used for experiments or neutron scattering techniques requiring polarized neutron beams. These experiments involve studies of magnetic materials and to a smaller (though growing) extent non-magnetic systems-the latter taking advantage of the Spin Echo Scattering Angle Measurement (SESAME) technique. Examples of programs using Asterix include: polarized neutron reflectometry of magnetic materials (in low and 11 T-strong fields), long-wavelength/large-d-spacing diffraction (d-spacing > 2 Å) and measurements of pair correlation lengths up to 2 µm in soft matter. Asterix views an intense polychromatic neutron beam through a 36-cm2
Instrumentation, Controls, and Automation Newsletter
This is the first newsletter for the Instrumentation, Controls, and Automation program of EPRI. This newsletter summarizes results of past and current projects and provides an overview of projects that will be completed in 2010. The first article describes the recently prototyped software Asset Fault Signature Database. The second article, "Inter-Control Center Communications Protocol Benefits Assessment," describes a previously completed EPRI/Southern Company tailored collaboration project. "Survey of C...
Nuclear instrumentation cable end seal
An improved coaxial end seal for hermetically sealed nuclear instrumentation cable exhibiting an improved breakdown pulse noise characteristic under high voltage, high temperature conditions. A tubular insulator body has metallized interior and exterior surface portions which are braze sealed to a center conductor and an outer conductive sheath. The end surface of the insulator body which is directed toward the coaxial cable to which it is sealed has a recessed surface portion within which the braze seal material terminates.
Cannon, Collins P. (Richland, WA); Brown, Donald P. (Richland, WA)
High-temperature borehole instrumentation
A new method of extracting natural heat from the earth's crust was invented at the Los Alamos National Laboratory in 1970. It uses fluid pressures (hydraulic fracturing) to produce cracks that connect two boreholes drilled into hot rock formations of low initial permeability. Pressurized water is then circulated through this connected underground loop to extract heat from the rock and bring it to the surface. The creation of the fracture reservior began with drilling boreholes deep within the Precambrian basement rock at the Fenton Hill Test Site. Hydraulic fracturing, flow testing, and well-completion operations required unique wellbore measurements using downhole instrumentation systems that would survive the very high borehole temperatures, 320/sup 0/C (610/sup 0/F). These instruments were not available in the oil and gas industrial complex, so the Los Alamos National Laboratory initiated an intense program upgrading existing technology where applicable, subcontracting materials and equipment development to industrial manufactures, and using the Laboratory resource to develop the necessary downhole instruments to meet programmatic schedules. 60 refs., 11 figs.
Dennis, B.R.; Koczan, S.P.; Stephani, E.L.
FAQS Job Task Analyses - Instrument and Controls
or Working Level Competencies or Working Level Competencies DOE-STD-1162, Instrument & Controls Functional Area Qualification Standard (FAQS) September 2010 STEP 1: Job Task Analysis for Tasks associated with Instrument & Controls Task Source Importance Frequency One: Serve as a subject matter expert and technical resource for instrumentation and control systems. Inspect and evaluate instrumentation and control systems for safe and efficient operation, maintenance, and testing. DOE-STD-1162 Duties and Responsibilities Items B and C 3 2 Two: Review and assess authorization basis documentation. Evaluate instrumentation and control system conformity to authorization basis documentation and other design basis documents. Audit facility instrumentation and control
Laser beam generating apparatus
Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 11 figures.
Warner, B.E.; Duncan, D.B.
Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect).
Warner, Bruce E. (Livermore, CA); Duncan, David B. (Auburn, CA)
Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus is described. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 7 figures.
Beam Diagnostics for FACET
FACET, the Facility for Advanced Accelerator and Experimental Tests, is a new facility being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration beginning in summer 2011. The nominal FACET parameters are 23GeV, 3nC electron bunches compressed to about 20 {micro}m long and focussed to about 10 {micro}m wide. Characterization of the beam-plasma interaction requires complete knowledge of the incoming beam parameters on a pulse-to-pulse basis. FACET diagnostics include Beam Position Monitors, Toroidal current monitors, X-ray and Cerenkov based energy spectrometers, optical transition radiation (OTR) profile monitors and coherent transition radiation (CTR) bunch length measurement systems. The compliment of beam diagnostics and their expected performance are reviewed. Beam diagnostic measurements not only provide valuable insights to the running and tuning of the accelerator but also are crucial for the PWFA experiments in particular. Beam diagnostic devices are being set up at FACET and will be ready for beam commissioning in summer 2011.
Li, S.Z.; Hogan, M.J.; /SLAC
Laser beam alignment system
A plurality of pivotal reflectors direct a high-power laser beam onto a workpiece, and a rotatable reflector is movable to a position wherein it intercepts the beam and deflects a major portion thereof away from its normal path, the remainder of the beam passing to the pivotal reflectors through an aperture in the rotating reflector. A plurality of targets are movable to positions intercepting the path of light traveling to the pivotal reflectors, and a preliminary adjustment of the latter is made by use of a low-power laser beam reflected from the rotating reflector, after which the same targets are used to make a final adjustment of the pivotal reflectors with the portion of the high-power laser beam passed through the rotating reflector.
Kasner, William H. (11686 Althea Dr., Pittsburgh, PA 15235); Racki, Daniel J. (712 Union Cemetery Rd., Greensburg, PA 15601); Swenson, Clark E. (228 Scott Dr., Monroeville, PA 15146)
First Beam to FACET
The SLAC 3km linear electron accelerator has been reconfigured to provide a beam of electrons to the new Facility for Advanced Accelerator Experimental Tests (FACET) while simultaneously providing an electron beam to the Linac Coherent Light Source (LCLS). On June 23, 2011, the first electron beam was transported through this new facility. Commissioning of FACET is in progress. On June 23, 2011, an electron beam was successfully transported through the new FACET system to a dump in Sector 20 in the linac tunnel. This was achieved while the last third of the linac, operating from the same control room, but with a separate injector system, was providing an electron beam to the Linac Coherent Light Source (LCLS), demonstrating that concurrent operation of the two facilities is practical. With the initial checkout of the new transport line essentially complete, attention is now turning toward compressing the electron bunches longitudinally and focusing them transversely to support a variety of accelerator science experiments.
Erickson, R.; Clarke, C.; Colocho, W.; Decker, F.-J.; Hogan, M.; Kalsi, S.; Lipkowitz, N.; Nelson, J.; Phinney, N.; Schuh, P.; Sheppard, J.; Smith, H.; Smith, T.; Stanek, M.; Turner, J.; Warren, J.; Weathersby, S.; Wienands, U.; Wittmer, W.; Woodley, M.; Yocky, G.; /SLAC
Apparatus for monitoring x-ray beam alignment
A self-contained, hand-held apparatus is provided for monitoring alignment of an x-ray beam in an instrument employing an x-ray source. The apparatus includes a transducer assembly containing a photoresistor for providing a range of electrical signals responsive to a range of x-ray beam intensities from the x-ray beam being aligned. A circuit, powered by a 7.5 VDC power supply and containing an audio frequency pulse generator whose frequency varies with the resistance of the photoresistor, is provided for generating a range of audible sounds. A portion of the audible range corresponds to low x-ray beam intensity. Another portion of the audible range corresponds to high x-ray beam intensity. The transducer assembly may include an a photoresistor, a thin layer of x-ray fluorescent material, and a filter layer transparent to x-rays but opaque to visible light. X-rays from the beam undergoing alignment penetrate the filter layer and excite the layer of fluorescent material. The light emitted from the fluorescent material alters the resistance of the photoresistor which is in the electrical circuit including the audio pulse generator and a speaker. In employing the apparatus, the x-ray beam is aligned to a complete alignment by adjusting the x-ray beam to produce an audible sound of the maximum frequency.
Steinmeyer, P.A.
Social instruments for robust convention emergence
We present the notion of Social Instruments as mechanisms that facilitate the emergence of conventions from repeated interactions between members of a society. Specifically, we focus on two social instruments: rewiring and observation. Our main goal ...
Daniel Villatoro; Jordi Sabater-Mir; Sandip Sen
ARM - Campaign Instrument - cm-sonde
from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Chilled Mirror Sonde (CM-SONDE) Instrument Categories Atmospheric Profiling Campaigns...
ARM - Campaign Instrument - cm-cryo
Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Cryogenic Chilled Mirror Hygrometer (CM-CRYO) Instrument Categories Atmospheric Profiling, Airborne...
ARM - Campaign Instrument - tethersonde-cm
us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Tethersonde With Chilled Mirror (TETHERSONDE-CM) Instrument Categories Atmospheric Profiling, Airborne...
ARM - Campaign Instrument - wrf-chem
below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Weather Research and Forecasting (WRF) Model Output (WRF-CHEM) Instrument Categories Surface Meteorology, Derived...
Airplane Instrument to Detect Ice Particles
A simple instrument that detects ice particles has been developed for use in airplane studies of thunderstorms. Although sophisticated instruments are available for imaging atmospheric ice particles, the spatial resolution of the particle ...
J. J. Jones; C. Grotbeck; B. Vonnegut
Turbulence Measurement with a Moored Instrument
A new autonomous and moored microstructure measuring instrument has been tested in coastal waters. The instrument measures shear in the dissipation range of the wavenumber spectrum using four shear probes; temperature fluctuations using two FP-07 ...
R. G. Lueck; D. Huang; D. Newman; J. Box
ARM - Campaign Instrument - lidar-dial
you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Dial Lidar (LIDAR-DIAL) Instrument Categories Aerosols, Atmospheric Profiling Campaigns ARM-FIRE...
ARM - Campaign Instrument - co2lidar
lidar Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Carbon Dioxide Doppler Lidar (CO2LIDAR) Instrument...
SPEAR3 Beam Line Availability
Beam Line Support | Floor Support | Administrative Support SPEAR3 Beam Line Availability Beam Line BL Type Technique(s) Status 1-4 X-ray Small and Wide Angle X-ray Scattering Open...
Small satellite radiation budget instrumentation
A major diagnostic in understanding the response of the Earth`s climate to natural or anthropogenic changes is the radiative balance at the top of the atmosphere. Two classes of measurements may be undertaken: (1) a monitoring of the radiation balance over decade-long long time-scales, and (2) measurements designed to provide a sufficiently complete data set to validate or improve models. This paper discusses some of the important ingredients in obtaining such data, and presents a description of some candidate instrumentation for use on a small satellite. 23 refs.
Weber, P.G.
A major diagnostic in understanding the response of the Earth's climate to natural or anthropogenic changes is the radiative balance at the top of the atmosphere. Two classes of measurements may be undertaken: (1) a monitoring of the radiation balance over decade-long long time-scales, and (2) measurements designed to provide a sufficiently complete data set to validate or improve models. This paper discusses some of the important ingredients in obtaining such data, and presents a description of some candidate instrumentation for use on a small satellite. 23 refs.
Virtual instrumentation to study galaxies
The MIGALE project (http://www.sai.msu.su/migale) provides databases and data analysis tools to study the evolution of galaxies from z=1 to z=0. It develops and maintain a general database, HyperLeda, to give a homogenized parameterization for 3 million objects, and several archives or specialized databases. It also develops tools to analyse on-the-fly data extracted from the database or obtained through the Virtual Observatory (Virtual Instruments). The package made for this project, Pleinpot, is distributed as open source.
Ph. Prugniel; I. Chilingarian; H. Flores; J. Guibert; R. Haigron; I. Jegouzo; F. Royer; F. Tajahmady; G. Theureau; J. Vetois
Principal Components Instrumental Variable Estimation
. The reason for the inconsistency is that the least squares estimation used for the projection of the first stage tends to fit too well, rendering an overfitted PKX which is still correlated with u if the number of instruments is large. The estimating... -dimensional IVE is just an IVE and as such possesses up to rn?G?2 moments, and thus it may achieve the performance in terms of bias of the 'no moments' estimators without displaying their unduly volatility due to fat tails. The fulfilment of condition (A) is key...
Winkelried, Diego; Smith, Richard J.
Sensors and Instrumentation and Nondestructive Evaluation - Nuclear...
Capabilities Sensors and Instrumentation and Nondestructive Evaluation Overview Energy System Applications Safety-Related Applications Homeland Security Applications...
Wireless Instrumentation of Aluminum Smelting Operatings
About this Abstract. Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium , Jim Evans Honorary Symposium. Presentation Title, Wireless Instrumentation ...
Electron and laser beam welding
This book contains 22 selections. Some of the titles are: Laser welding of chandelles to the plates of the sommier employed in the nuclear power plant core; Electron beam welding of hobbing cutters; Sealing welds in electron beam welding of thick metals; Development and application of high power electron beam welding; Electron beam welding of dissimilar metals (niobium, molybdenum, porous tungsten-molybdenum); Status of electron beam welding in the United States of America; and Electron and laser beam welding in Japan.
Instrumentation for environmental monitoring. Volume 3. Radiation
A comprehensive survey of instrunnentation for environmental monitoring is being carried out by the Lawrence Berkeley Laboratory under a grant from the Natioral Science Foundation. Instruments being investigated are those useful for measurements of Air Quality, Water Quality, Radiation, and Biomedical Parameters related to environmental research and monitoring. Consideration is given to instruments and techniques presently in use and to those developed for other purposes but having possible applications to this work. The results of the survey are given as (a) descriptions of the physical and operating characteristics of available instruments, (b) critical comparisons among instrumentation methods, and (c) recommendations of promising methodology and development of new instrumentation. The survey material is compiled in 5 loose- leaf volumes which can be periodically updated. An update for volume 3 on radiation instrumentation is presented. New pages are included for insertion in the introductory material and also under the headings nuclear reactors, combination instruments, alpha particle instrumentation, beta particle instrumentation, x and gamma radiation monitoring instrumentation, gamma spectrometry, neutron monitoring instrumentation, personnel dosimetry, radionuclides (strontium -89 and -90, iodine -129 and -131, radium, uranium, plutonium, and instrument notes), and infrared. (WHK)
Development of metrology instruments for grazing incidence mirrors
The effective utilization of synchrotron radiation (SR) from high-brightness sources requires the use of optical components with very smooth surfaces and extremely precise shapes. Most manufacturers are not capable of measuring the figure and finish quality of the aspheric optics required for use in grazing incidence beam lines. Over the past several years we have developed measurement techniques and metrology instrumentation that have allowed us to measure the surface profile and roughness of large cylinder optics, up to one meter in length. Based on our measurements and feedback, manufacturers have been able to advance the state-of-the-art in mirror fabrication and are now able to produce acceptable components. Our analysis techniques enable designers to write meaningful specifications and predict the performance of real surfaces in their particular beamline configurations. Commercial instruments are now available for measuring surface microroughness with spatial periods smaller than about one millimeter. No commercial instruments are available for measuring the surface figure on cylindrical aspheres over long spatial periods, from one millimeter up to one meter. For that reason we developed a Long Trace Profiler (LTP) that measures surface profile over the long period range in a non-contact manner to extremely high accuracy. Examples of measured surfaces and data analysis techniques will be discussed, and limitations on the quality of optical surfaces related to intrinsic material properties will also be discussed. 15 refs., 14 figs., 2 tabs.
Takacs, P.Z. (Brookhaven National Lab., Upton, NY (USA)); Church, E.L. (Army Research and Development Command, Dover, NJ (USA)); Qian, Shi-nan (China Univ. of Science and Technology, Hefei, AH (China). Hefei National Synchrotron Radiation Lab.); Liu, Wuming (Academia Sinica, Beijing, BJ (China). Inst. of High Energy Physics)
Frontiers of Particle Beam Physics
Low Emittance e--e+ Beams, Brookhaven National Laboratory,Island, NY, October 1988, Brookhaven National Laboratory,Low Emittance e--e+ Beams, Brookhaven National Laboratory,
Sessler, Andrew M.
Focal Plane Instrumentation of VERITAS
VERITAS is a new atmospheric Cherenkov imaging telescope array to detect very high energy gamma rays above 100 GeV. The array is located in southern Arizona, USA, at an altitude of 1268m above sea level. The array consists of four 12-m telescopes of Davies-Cotton design and structurally resembling the Whipple 10-m telescope. The four focal plane instruments are equipped with high-resolution (499 pixels) fast photo-multiplier-tube (PMT) cameras covering a 3.5 degree field of view with 0.15 degree pixel separation. Light concentrators reduce the dead-space between PMTs to 25% and shield the PMTs from ambient light. The PMTs are connected to high-speed preamplifiers allowing operation at modest anode current and giving good single photoelectron peaks in situ. Electronics in the focus box provides real-time monitoring of the anode currents for each pixel and ambient environmental conditions. A charge injection subsystem installed in the focus box allows daytime testing of the trigger and data acquisition system by injecting pulses of variable amplitude and length directly into the photomultiplier preamplifiers. A brief description of the full VERITAS focal plane instrument is given in this paper.
VERITAS Collaboration; T. Nagai; R. McKay; G. Sleege; D. Petry
Beam Purification by Photodetachment
Ion beam purity is of crucial importance to many basic and applied studies. Selective photodetachment has been proposed to suppress unwanted species in negative ion beams while preserving the intensity of the species of interest. A highly efficient technique based on photodetachment in a gas-filled radio frequency quadrupole ion cooler has been demonstrated. In off-line experiments with stable ions, up to 104 times suppression of the isobar contaminants in a number of interesting radioactive negative ion beams has been demonstrated. For selected species, this technique promises experimental possibilities in studies on exotic nuclei, accelerator mass spectrometry, and fundamental properties of negative atomic and molecular ions.
Liu, Yuan [ORNL; Beene, James R [ORNL; Havener, Charles C [ORNL; Galindo-Uribarri, Alfredo {nmn} [ORNL; Andersson, P. [University of Gothenburg, Sweden; Lindahl, A. O. [University of Gothenburg, Sweden; Hanstorp, D. [University of Gothenburg, Sweden; Forstner, Dr. Oliver [University of Vienna, Austria; Gottwald, T. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany; Wendt, K. [Johannes Gutenberg-Universitaet Mainz, Mainz, Germany
Simulations of beam-beam and beam-wire interactions in RHIC
The beam-beam interaction is one of the dominant sources of emittance growth and luminosity lifetime deterioration. A current carrying wire has been proposed to compensate long-range beam-beam effects in the LHC and strong localized long-range beam-beam effects are experimentally investigated in the RHIC collider. Tune shift, beam transfer function, and beam loss rate are measured in dedicated experiments. In this paper, they report on simulations to study the effect of beam-wire interactions based on diffusive apertures, beam loss rates, and beam transfer function using a parallelized weak-strong beam simulation code (BBSIMC). The simulation results are compared with measurements performed in RHIC during 2007 and 2008.
Kim, Hyung J.; Sen, Tanaji; /Fermilab; Abreu, Natalia P.; Fischer, Wolfram; /Brookhaven
Simulation study of beam-beam effects in ion beams with large space charge tuneshift
During low-energy operations with gold-gold collisions at 3.85 GeV beam energy, significant beam lifetime reductions have been observed due to the beam-beam interaction in the presence of large space charge tuneshifts. These beam-beam tuneshift parameters were about an order of magnitude smaller than during regular high energy operations. To get a better understanding of this effect, simulations have been performed. Recent results are presented.
Montag C.
Neutral particle beam intensity controller
The neutral beam intensity controller is based on selected magnetic defocusing of the ion beam prior to neutralization. The defocused portion of the beam is dumped onto a beam dump disposed perpendicular to the beam axis. Selective defocusing is accomplished by means of a magnetic field generator disposed about the neutralizer so that the field is transverse to the beam axis. The magnetic field intensity is varied to provide the selected partial beam defocusing of the ions prior to neutralization. The desired focused neutral beam portion passes along the beam path through a defining aperture in the beam dump, thereby controlling the desired fraction of neutral particles transmitted to a utilization device without altering the kinetic energy level of the desired neutral particle fraction. By proper selection of the magnetic field intensity, virtually zero through 100% intensity control of the neutral beam is achieved.
Dagenhart, W.K.
Courses on Beam Physics
Beam Physics Beam Physics The following is an incomplete listing of course available for beam physics. United States Particle Accelerator School The US Particle Accelerator School provides educational programs in the field of beams and their associated accelerator technologies not otherwise available to the community of science and technology. Joint Universities Accelerator School Each year JUAS provides a foundation course on accelerator physics and associated technologies. The US-CERN-Japan-Russia Joint Accelerator School The purpose of the US-CERN-Japan-Russia joint school is to better our relations by working together on an advanced topical course every two years, alternating between the U.S., western Europe, Japan and Russia. The last set of courses focused on the frontiers of accelerator technology in
BNL | ATF Beam Schedule
Beam Schedule (pdf) Beam Schedule (pdf) Sunday Monday Tuesday Wednesday Thursday Friday Saturday 22 1/2 Holiday Holiday 28 January Holiday 4 5 Maintenance 11 12 Maintenance 18 19 Holiday AE52 - DWFA (Euclid), BL2 25 February AE52 - DWFA (Euclid), BL2 1 2 AE50 - PWFA in QNR (UCLA), BL2 8 9 AE50 - PWFA in QNR (UCLA), BL2 15 16 Holiday AE50 - PWFA in QNR (UCLA), BL2 22 March 1 2 AE53 - Nonlinear Compton (UCLA) 8 9 AE53 - Nonlinear Compton (UCLA) 15 16 AE53 - Nonlinear Compton (UCLA) 22 23 29 Sunday Monday Tuesday Wednesday Thursday Friday Saturday User operations (E-beam in use) Ions - Ion generation User operations (laser in use) PWFA - Plasma Wakefield Acceleration User operations (E-beam and laser in use)
Curtis Instruments Inc | Open Energy Information
Instruments Inc Instruments Inc Jump to: navigation, search Name Curtis Instruments, Inc. Place Mount Kisco, New York Sector Vehicles Product They make motor speed controllers, battery measurement equipment and related equipment for electric vehicles of all types. References Curtis Instruments, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Curtis Instruments, Inc. is a company located in Mount Kisco, New York . References ↑ "Curtis Instruments, Inc." Retrieved from "http://en.openei.org/w/index.php?title=Curtis_Instruments_Inc&oldid=344009" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages
Intense ion beam generator
Methods and apparatus for producing intense megavolt ion beams are disclosed. In one embodiment, a reflex triode-type pulsed ion accelerator is described which produces ion pulses of more than 5 kiloamperes current with a peak energy of 3 MeV. In other embodiments, the device is constructed so as to focus the beam of ions for high concentration and ease of extraction, and magnetic insulation is provided to increase the efficiency of operation.
Humphries, Jr., Stanley (Ithaca, NY); Sudan, Ravindra N. (Ithaca, NY)
Beam/seam alignment control for electron beam welding
This invention relates to a dynamic beam/seam alignment control system for electron beam welds utilizing video apparatus. The system includes automatic control of workpiece illumination, near infrared illumination of the workpiece to limit the range of illumination and camera sensitivity adjustment, curve fitting of seam position data to obtain an accurate measure of beam/seam alignment, and automatic beam detection and calculation of the threshold beam level from the peak beam level of the preceding video line to locate the beam or seam edges.
Burkhardt, Jr., James H. (Knoxville, TN); Henry, J. James (Oak Ridge, TN); Davenport, Clyde M. (Knoxville, TN)
Small Spot, Brighter Beam
Small Spot, Brighter Beam Small Spot, Brighter Beam Small Spot, Brighter Beam Print Do you notice the brighter beam? During the most recent shutdown, all of the corrector magnets were replaced with sextupoles, reducing the horizontal emittance and increasing beam brightness. "This is part of ongoing improvement to keep the ALS on the cutting edge," says Alastair MacDowell, a beamline scientist on Beamline 12.2.2. The brightness has increased by a factor of about three in the storage ring. Beamlines on superbend or center-bend magnets will see the most noticeable increase in brightness, but the horizontal beam size and divergence have been substantially reduced at all beamlines. "We are starting to approach the resolution of many beamlines. Therefore, not every beamline will be able to resolve the full improvement," says Christoph Steier, project leader of the brightness upgrade. Though superbend and center-bend magnet source sizes are reduced by roughly a factor of three, "measured improvements so far range from a factor of 2-2.5," Steier says. He and MacDowell agree that the beamline optics are likely the limiting factor in resolving the full improvement at the beamlines.
LANSCE | Lujan Center | Instruments | PHAROS
High-Resolution Chopper Spectrometer | Pharos High-Resolution Chopper Spectrometer | Pharos Local Structure, Magnetism, and Nanomaterials Pharos is designed for studies of fundamental excitations in condensed-matter systems. The instrument provides 2% to 4% incident energy resolution and uses a high-speed Fermi chopper to obtain monochromatic incident energies in the range from 10 meV to 2 eV. The sample is positioned 20 meters from a chilled-water moderator. The spectrometer consists of an evacuated, shielded flight path with 10 m2 of meter-long position-sensitive detectors located at a distance of 4 meters from the sample and covering scattering angles between -10° and 145°. Pharos can accommodate the full range of inelastic scattering experiments on liquid, polycrystalline, and single-crystal samples. This includes
LANSCE | Lujan Center | Instruments | HIPD
Intensity Powder Diffractometer | HIPD Intensity Powder Diffractometer | HIPD Local Structure, Magnetism, and Nanomaterials HIPD is a high intensity and medium resolution powder diffractometer designed for studies on the atomic and magnetic structure of crystalline and non-crystalline powders and local structure analysis (PDF) studies. High counting rates are achieved thanks to the proximity to the neutron source (primary flight path = 9 m). The beam size at the sample position is 1 cm wide and 5 cm high and collimation may be added to support small sample volumes and specialized ancillary equipment. HIPD detectors are located at ± 153°, ± 90°, ± 40° and ± 14°, each covering ± 5°, which allows over 2 decades of momentum transfer (0.2 - 60 Å-1). HIPD is specially suited for magnetic diffraction, magnetic and crystalline phase
Spiral Development for Safeguards Instrumentation
Safeguards instrumentation is highly specialized, so a common approach in the US has been to develop initial prototypes for performance, operability and security within the US National Laboratories for the IAEA and then seek one or more commercial partners. Transfer of technology from US National Laboratories is a legal requirement for products that have the potential for mass production. Other important objectives include minimizing time to deployment and lifecycle cost, and optimizing product maintainability, sustainability and manufacturability. Unfortunately, the deployment of systems developed via this model has sometimes been seriously delayed or never adopted because of the difficulty of optimizing the significant parameters of the process between the public and private sectors. The authors suggest that forming an R&D partnership between a research laboratory and a commercial company much earlier in the process would provide significant advantages. The present US practice leads to unnecessary expenditures during the early R&D phase since many decisions are made based on research needs that are counterproductive for commercialization and manufacturability. If the ultimate goal of the project is to produce a reliable and cost effective commercial product, the commercial input is needed early and often. The new "model" of developing systems in a closer collaboration with the private sector, in a spiral "Commercialization by Design" approach, should also limit the long term financial mortgages that Member States frequently experience with respect to safeguards instrumentation development using the present process. As a concrete example, the potential for incorporating Wire Integrity Verification Technology into the iCobra Reader System is discussed.
Koskelo, M.; Undem, Halvor A.; Good, Morris S.; Frazar, Sarah L.; Schanfein, Mark; Kadner, S.
MC and A instrumentation catalog
In 1981 and 1985, two editions of a catalog of non-destructive nuclear measurement instrumentation, and material control and surveillance equipment, were published by Brookhaven National Laboratory (BNL). The last edition of the catalog included one hundred and twenty-five entries covering a wide range of devices developed in the US and abroad. More than ten years have elapsed since the publication of the more recent Catalog. Devices described in it have undergone significant modifications, and new devices have been developed. Therefore, in order to assist specialists in the field of Material Control and Accounting (MC and A), a new catalog has been created. Work on this instrumentation catalog started in 1997 as a cooperative effort of Brookhaven National Laboratory (BNL), operated by Brookhaven Science Associates under contract to the US Department of Energy, and the All-Russian Research Institute of Automatics (VNIIA), subordinate institute of the Atomic Energy Ministry of the Russian Federation, within the collaborative US-Russia Material Protection, Control, and Accounting (MPC and A) Program. Most of the equipment included in the Catalog are non-destructive assay (NDA) measurement devices employed for purposes of accounting, confirmation, and verification of nuclear materials. Other devices also included in the Catalog are employed in the detection and deterrence of unauthorized access to or removal of nuclear materials (material control: containment and surveillance). Equipment found in the Catalog comprises either: (1) complete devices or systems that can be used for MC and A applications; or (2) parts or components of complete systems, such as multi-channel analyzers, detectors, neutron generators, and software. All devices are categorized by their status of development--from prototype to serial production.
Neymotin, L. [ed.] [Brookhaven National Lab., Upton, NY (United States); Sviridova, V. [ed.] [All-Russian Research Inst. of Automatics, Moscow (Russian Federation)
ESTB: A New Beam Test Facility at SLAC
End Station A Test Beam (ESTB) is a beam line at SLAC using a small fraction of the bunches of the 13.6 GeV electron beam from the Linac Coherent Light Source (LCLS), restoring test beam capabilities in the large End Station A (ESA) experimental hall. ESTB will provide one of a kind test beam essential for developing accelerator instrumentation and accelerator R&D, performing particle and particle astrophysics detector research, linear collider machine and detector interface (MDI) R&D studies, development of radiation-hard detectors, and material damage studies with several distinctive features. In the past, 18 institutions participated in the ESA program at SLAC. In stage I, 4 new kicker magnets will be added to divert 5 Hz of the LCLS beam to the A-line. A new beam dump will be installed and a new Personnel Protection System (PPS) is being built in ESA. In stage II, a secondary hadron target will be installed, able to produce pions up to about 12 GeV/c at 1 particle/pulse.
Pivi, M.; Fieguth, T.; Hast, C.; Iverson, R.; Jaros, J.; Jobe, K.; Keller, L.; Walz, D.; Weathersby, S.; Woods, M.; /SLAC
Wire Scanner Beam Profile Measurements for the LANSCE Facility
The Los Alamos Neutron Science Center (LANSCE) is replacing beam profile measurement systems, commonly known as Wire Scanners (WS). Using the principal of secondary electron emission, the WS measurement system moves a wire or fiber across an impinging particle beam, sampling a projected transverse-beam distribution. Because existing WS actuators and electronic components are either no longer manufactured or home-built with antiquated parts, a new WS beam profile measurement is being designed, fabricated, and tested. The goals for these new WS's include using off-the-shelf components while eliminating antiquated components, providing quick operation while allowing for easy maintainability, and tolerating external radioactivation. The WS measurement system consists of beam line actuators, a cable plant, an electronics processor chassis, and software located both in the electronics chassis (National Instruments LabVIEW) and in the Central Control Room (EPICS-based client software). This WS measurement system will measure Hand H{sup +} LANSCE-facility beams and will also measure less common beams. This paper describes these WS measurement systems.
Gilpatrick, John D. [Los Alamos National Laboratory; Gruchalla, Michael E. [Los Alamos National Laboratory; Martinez, Derwin [Los Alamos National Laboratory; Pillai, Chandra [Los Alamos National Laboratory; Rodriguez Esparza, Sergio [Los Alamos National Laboratory; Sedillo, James Daniel [Los Alamos National Laboratory; Smith, Brian G. [Los Alamos National Laboratory
NSLS beam line data acquisition and analysis computer system
A versatile computer environment to manage instrumentation alignment and experimental control at NSLS beam lines has been developed. The system is based on a 386/486 personal computer running under a UNIX operating system with X11 Windows. It offers an ideal combination of capability, flexibility, compatibility, and cost. With a single personal computer, the beam line user can run a wide range of scattering and spectroscopy experiments using a multi-tasking data collection program which can interact with CAMAC, GPIB and AT-Bus interfaces, and simultaneously examine and analyze data and communicate with remote network nodes.
Feng-Berman, S.K.; Siddons, D.P.; Berman, L.
Controls, LLRF, and instrumentation systems for ILC test facilities at Fermilab
The major controls and instrumentation systems for the ILC test areas and the NML test accelerator at Fermilab are discussed. The test areas include 3 separate areas for Vertical Superconducting RF Cavity Testing, Horizontal Cavity Testing, and NML RF and beam test area. A common control infrastructure for the test areas including a controls framework, electronic logbook and cavity database will be provided, while supporting components supplied by collaborators with diverse areas of expertise (EPICS, DOOCS, LabVIEW, and Matlab). The discussions on the instrumentation systems are focused on overview and requirements.
Chase, B.; Votava, M.; Wendt, M.; /Fermilab
Electron Beam Powder Bed Processes
Advanced Materials, Processes and Applications for Additive Manufacturing : Electron Beam Powder Bed Processes Program Organizers: Andrzej ...
Single element laser beam shaper
A single lens laser beam shaper for converting laser beams from any spatial profile to a flat-top or uniform spatial profile. The laser beam shaper includes a lens having two aspheric surfaces. The beam shaper significantly simplifies the overall structure in comparison with conventional 2-element systems and therefore provides great ease in alignment and reduction of cost.
Zhang, Shukui (Yorktown, VA); Michelle D. Shinn (Newport News, VA)
of the Two-Phase Flow Instrumentation Group Meeting, U.S.OF ELECTRO-OPTICAL INSTRUMENTATION FOR REACTOR SAFETYOF ELECTRO-OPTICAL INSTRUMENTATION FOR REACTOR SAFETY
Turko, B.T.
C. -K. Yen ENGINEERING AND INSTRUMENTATION C. Dols D. NelsonLaboratory DOSIMETRY, INSTRUMENTATION AND EXPOSURE CHAMBERSLBL-9554 DOSIMETRY, INSTRUMENTATION AND EXPOSURE CHAMBERS
Tenforde, T.S.
Instrumentation and Quench Protection for LARP Nb3Sn Magnets
Instrumentation and Quench Protection for LARP Nb 3 Snis a primary goal. The instrumentation is consequently a keydetails of the LQ instrumentation and its implementation
Felice, H.
references. bJarrell -Ash, Instrumentation Lab . , PerkinŁ sample, Jarrell-Ash, Instrumentation Labs. , Perkin Elmer,this room A Survey of Instrumentation Used for Monitoring
Quinby-Hunt, M.S.
and R. Haught, Instrumentation evaluation, calibration, and27 - 30,1979. ROCK INSTRUMENTATION PROBLEMS EXPERIENCEDdiscussed here,l INSTRUMENTATION AND DATA ACQUISITION SYSTEM
Binnall, E.
Development of multi-platform control and instrumentation communications to increase operational reliability - application to MAST
Improving the reliability and reducing the maintenance time to give increased availability is a key feature of developing control & instrumentation (C&I) systems relevant to future fusion devices such as DEMO and to fusion power plants. Standardising access to the multiple platforms comprising C&I systems on working plant including software that analyses data is one aspect of achieving this. This has been realised on the MAST Neutral Beam Injection system (MNBI) following an extensive upgrade to the C&I, to improve the operational reliability of the neutral beam plant.
Homfray, D A; Khilar, S; King, R; Payne, D; Simmonds, M R; Tame, C; Whitehead, B
Beam Characterizations at Femtosecond Electron Beam Facility
The SURIYA project at the Fast Neutron Research Facility (FNRF) has been established and is being commissioning to generate femtosecond (fs) electron bunches. Theses short bunches are produced by a system consisting of an S-band thermionic cathode RF-gun, an alpha magnet (a-magnet) serving as a magnetic bunch compressor, and a SLAC-type linear accelerator (linac). The characteristics of its major components and the beam characterizations as well as the preliminary experimental results will be presented and discussed in this paper.
Rimjaem, S.; Jinamoon, V.; Kangrang, M.; Kusoljariyakul, K.; Saisut, J.; Thongbai, C.; Vilaithong, T.; Rhodes, M.W.; Wichaisirimongkol, P.; /Chiang Mai U.; Wiedemann, H.; /SLAC
New generation of the SORTI instruments
New generation of the SORTI instruments New generation of the SORTI instruments Hawat, Tom Denver University Murcray, Frank University of Denver Category: Instruments In order to generate long-term monitoring data of the atmospheric composition using SORTI instrument and integrated in the Aura validation campaign, a new instrument generation has been developed. SORTI is a Fourier Transform Spectrometer system, including an automatic solar tracker and a computer for control, data processing, and storage. SORTI is refurbished and operates to generate very high spectral resolution (~0.004 cm-1) infrared spectra (2.5 to 14 microns, 4000 to 750 cm-1) of the earth's atmosphere using the sun as the external source. The instrument enables one to perform the operation of the spectrometric atmospheric
Metadata-Based Parallelization of Program Instrumentation
Program instrumentation has a wide variety of useful applications, but tool writers must overcome the challenge of substantial overheads caused by introducing additional code and data into a program. This paper observes that instrumentation usually operates on many discrete, independent data structures, which we call metadata parallelism. We proposes to exploit this phenomenon to reduce the overhead of instrumented programs by executing instrumentation function invocations that manipulate different pieces of metadata simultaneously in different threads. The key challenge to spreading instrumentation function execution across many threads is ensuring that metadata updates occur in the correct order, and do not suffer from data races. Metadata-based parallelization solves this problem by using a user-specified mapping of instrumentation function invocations to serialization sets.
Matthew D. Allen; Gurindar S. Sohi; Matthew D. Allen; Gurindar S. Sohi
Booster gold beam injection efficiency and beam loss
The Relativistic Heavy Ion Collider (RHIC) at the BNL requires the AGS to provide gold beam with the intensity of 10{sup 9} ions per bunch. Over the years, the Tandem Van de Graaff has provided steadily increasing intensity of gold ion beams to the AGS Booster. However, the gold ion beam injection efficiency at the Booster has been found to decrease with the rising intensity of injected beams. As the result, for Tandem beams of the highest intensity, the Booster late intensity is lower than with slightly lower intensity Tandem beam. In this article, the authors present two experiments associated with the Booster injection efficiency and beam intensity. One experiment looks at the Booster injection efficiency by adjusting the Tandem beam intensity, and another looks at the beam life time while scraping the beam in the Booster. The studies suggest that the gold beam injection efficiency at the AGS Booster is related to the beam loss in the ring, rather than the intensity of injected beam or circulating beam.
Zhang, S.Y.; Ahrens, L.A.
Optimal Instrumentation for Combined Cycle Plant Performance
Power plants today rely on distributed control systems (DCS) to operate their equipment. These control systems subsequently rely on process information provided by various instruments in the field. The accuracy and reliability of field instrumentation has a direct correlation to the ability of the control system to operate correctly, including the ability to control the plant in a safe and reliable manner.Beyond instrumentation relied on for control of the power plant, additional ...
Research in materials, equipment, and instrument development was required in the Hot Dry Rock Energy Extraction Demonstration at Fenton Hill located in northern New Mexico. The new Phase II Energy Extraction System at the Fenton Hill Test Site will consist of two wellbores drilled to a depth of about 4570 m (15,000 ft) and then connected by a series of hydraulic-induced fractures. The first borehole (EE-2) was completed in May of 1980, at a depth of 4633 m (15,200 ft) of which approximately 3960 m (13,000 ft) is in Precambrian granitic rock. Starting at a depth of approximately 2930 m (9600 ft), the borehole was inclined up to 35/sup 0/ from vertical. Bottom-hole temperature in EE-2 is 317/sup 0/C. The EE-3 borehole was then drilled to a depth of 4236 m (13,900 ft). Its inclined part is positioned directly over the EE-2 wellbore with a vertical separation of about 450 m (1500 ft) between them. The materials development programs cover all aspects of geothermal energy extraction. Research on drilling, hydraulic fracturing, and wellbore logging were necessary to determine the technical and economic feasibility of the hot dry rock concepts.
Dennis, B.R.; Koczan, S.; Cruz, J.
Instrumentation, Control, and Intelligent Systems
Abundant and affordable energy is required for U.S. economic stability and national security. Advanced nuclear power plants offer the best near-term potential to generate abundant, affordable, and sustainable electricity and hydrogen without appreciable generation of greenhouse gases. To that end, Idaho National Laboratory (INL) has been charged with leading the revitalization of nuclear power in the U.S. The INL vision is to become the preeminent nuclear energy laboratory with synergistic, world-class, multi-program capabilities and partnerships by 2015. The vision focuses on four essential destinations: (1) Be the preeminent internationally-recognized nuclear energy research, development, and demonstration laboratory; (2) Be a major center for national security technology development and demonstration; (3) Be a multi-program national laboratory with world-class capabilities; (4) Foster academic, industry, government, and international collaborations to produce the needed investment, programs, and expertise. Crucial to that effort is the inclusion of research in advanced instrumentation, control, and intelligent systems (ICIS) for use in current and advanced power and energy security systems to enable increased performance, reliability, security, and safety. For nuclear energy plants, ICIS will extend the lifetime of power plant systems, increase performance and power output, and ensure reliable operation within the system's safety margin; for national security applications, ICIS will enable increased protection of our nation's critical infrastructure. In general, ICIS will cost-effectively increase performance for all energy security systems.
LCLS-II New Instruments Workshops Report
The LCLS-II New Instruments workshops chaired by Phil Heimann and Jerry Hastings were held on March 19-22, 2012 at the SLAC National Accelerator Laboratory. The goal of the workshops was to identify the most exciting science and corresponding parameters which will help define the LCLS-II instrumentation. This report gives a synopsis of the proposed investigations and an account of the workshop. Scientists from around the world have provided short descriptions of the scientific opportunities they envision at LCLS-II. The workshops focused on four broadly defined science areas: biology, materials sciences, chemistry and atomic, molecular and optical physics (AMO). Below we summarize the identified science opportunities in the four areas. The frontiers of structural biology lie in solving the structures of large macromolecular biological systems. Most large protein assemblies are inherently difficult to crystallize due to their numerous degrees of freedom. Serial femtosecond protein nanocrystallography, using the 'diffraction-before-destruction' approach to outrun radiation damage has been very successfully pioneered at LCLS and diffraction patterns were obtained from some of the smallest protein crystals ever. The combination of femtosecond x-ray pulses of high intensity and nanosized protein crystals avoids the radiation damage encountered by conventional x-ray crystallography with focused beams and opens the door for atomic structure determinations of the previously largely inaccessible class of membrane proteins that are notoriously difficult to crystallize. The obtained structures will allow the identification of key protein functions and help in understanding the origin and control of diseases. Three dimensional coherent x-ray imaging at somewhat lower resolution may be used for larger objects such as viruses. The chemistry research areas of primary focus are the predictive understanding of catalytic mechanisms, with particular emphasis on photo- and heterogeneous catalysis. Of particular interest is the efficient conversion of light to electrical or chemical energy, which requires understanding the non-adiabatic dynamics of electronic excited states. Ultrafast x-ray scattering presents an excellent opportunity to investigate structural dynamics of molecular systems with atomic resolution, and x-ray scattering and spectroscopy present an excellent opportunity to investigating the dynamics of the electronic charge distribution. Harnessing solar energy to generate fuels, either indirectly with photovoltaics and electrochemical catalysis or directly with photocatalysts, presents a critical technological challenge that will require the use of forefront scientific tools such as ultrafast x-rays. At the center of this technical challenge is the rational design of efficient and cost effective catalysts. Important materials science opportunities relate to information technology applications, in particular the transport and storage of information on increasingly smaller length- and faster time-scales. Of interest are the understanding of the intrinsic size limits associated with the storage of information bits and the speed limits of information or bit processing. Key questions revolve about how electronic charges and spins of materials can be manipulated by electric and magnetic fields. This requires the exploration of speed limits subject to the fundamental conservation laws of energy and linear and angular momentum and the different coupling of polar electric and axial magnetic fields to charge and spin. Of interest are novel composite materials, including molecular systems combining multi electric and magnetic functionality. Ultrafast x-rays offer the required probing speed, can probe either the charge or spin properties through polarization control and through scattering and spectroscopy cover the entire energy-time-momentum-distance phase space. In the field of atomic and molecular science, LCLS II promises to elucidate the fundamental interactions among electrons and between electrons and nuclei, and to explore the fron
Baradaran, Samira; Bergmann, Uwe; Durr, Herrmann; Gaffney, Kelley; Goldstein, Julia; Guehr, Markus; Hastings, Jerome; Heimann, Philip; Lee, Richard; Seibert, Marvin; Stohr, Joachim; /SLAC
Detectors - Instrument Support | ORNL Neutron Sciences
Detectors Detectors Detectors The detector design group, led by Yacouba Diawara is responsible for supporting the design of HFIR and SNS instruments by developing the necessary infrastructure and acquiring detector components that will be used to complete the functionality of the instruments. The group's mission also includes supporting detector research and development (R&D) for the various instruments and their different needs. The support effort for instrument design entails monitoring detector development worldwide as neutron facilities around the globe are getting upgraded and adopting the newest technologies. Detector group technician Ted Visscher inspects a parahedreal lens on an Anger camera Detector group technician Ted Visscher inspects a parahedreal lens on an
Nanomaterials and the Environment & Instrumentation, Metrology...
Exposure Assessment of Nanomaterials October 6-7, 2009: Nanomaterials and the Environment & Instrumentation, Metrology, and Analytical Methods November 17-18, 2009:...
Mechanical Characterization Using The Instrumented Indentation Test
Abstract Scope, The instrumented indentation test(IIT) is being increasingly used to evaluate mechanical characteristics of materials because of its advantages: it ...
Computational and experimental study of instrumented indentation
The effect of characteristic length scales, through dimensional and microstructural miniaturizations, on mechanical properties is systematically investigated by recourse to instrumented micro- and/or nanoindentation. This ...
Chollacoop, Nuwong, 1977-
ARM - Campaign Instrument - ftir-raob
(FTIR-RAOB) Instrument Categories Radiometric, Atmospheric Profiling Campaigns The ARM Pilot Radiation Observation Experiment (PROBE) Download Data Tropical Western Pacific,...
Instrumentation-Surface Electrochemistry and Electrocatalysis...
instrumentation, including one PARC 270, six Voltalab 10-40 potentiostats, BAS 100, CHI 604 and 700C electrochemical analyzers, six sets for rotating disk-ring...
Instrument Schedule for ng7refl
Instrument Schedule For NG-7 -- Cold neutron reflectometer-horizontal sample. ... 12/12/2012 11:00, 6, 18041, Dependence of the fusion of Dengue E ...
LANSCE | Lujan Center | Instruments | NPDF Technical Sheet
International Neutron Scattering Instrumentation School (INSIS...
INSIS 2012 International Neutron Scattering Instrumentation School (INSIS) 15 - 27 July, 2012 INSIS 2012 INFN - Laboratori Nazionali di Frascati * Rome, Italy About the School How...
User interfaces in space science instrumentation .
??This thesis examines user interaction with instrumentation in the specific context of space science. It gathers together existing practice in machine interfaces with a look… (more)
McCalden, A.J.
ISG8-Parameters, Design, Instrumentation and Tuning
Parameters, Design, Instrumentation and Tuning (WG1) Bldg.212 Cascades Conference Rm. K. Kubo, T. Raubenheimer, P. Tenenbaum, K. Yokoya Parallel Sessions: Working Groups: WG1:...
Instruments for subsurface monitoring of geothermal subsidence
The requirements for a subsurface geothermal subsidence instrument were reviewed. Available instruments for monitoring subsurface displacements, both vertical and horizontal, were studied and the most capable instruments identified. Techniques and materials for improving existing or developing new instruments were evaluated. Elements of sensor and signal technology with potential for high temperature monitoring of subsidence were identified. Drawing from these studies, methods to adapt production wells for monitoring were proposed and several new instrumentation systems were conceptually designed. Finally, four instrumentation systems were selected for future development. These systems are: triple sensor induction sensor probe (with casing collar markers); triple sensor gamma ray detector probe (with radioactive markers); triple sensor reed switch probe (with magnet markers); and triple sensor oscillator-type magnet detector probe (with magnet markers). All are designed for use in well casing incorporating slip couplings or bellows sections, although the gamma ray detector probe may also be used in unlined holes. These systems all measure vertical moement. Instruments to measure horizontal displacement due to geothermal subsidence were studied and the required instrument performance was judged to be beyond the state-of-the-art. Thus, no conceptual designs for instruments to monitor horizontal movement are included.
O'Rourke, J.E.; Ranson, B.B.
Calibration of NRSF2 Instrument at HFIR
The Neutron Residual Stress Mapping Facility (NRSF2) at HB-2B is a new generation-diffraction instrument, adding many new Second Generation features, such as larger beam tube, large sample XYZ goniometer, and KAPPA orienter for a broad range of materials behavior studies. One key feature is the NRSF2 monochromator, which is a double focusing, double crystal monochromator system consisting of two sets of stacked Si crystal wafers. One set of wafers has Si[400] plane normal to the surface while the other set of wafers has the Si[500] normal to the surface. The monochromator crystal diffracts at a fixed diffraction angle of 88{sup o} selecting a neutron wavelength determined by the monochromator d{sub hkl}-spacing. This 'Missouri' monochromator system has two independent monochromators, which enable diffraction from the following set of six diffraction planes: Si(511), Si(422), Si(331)AF (Anti-Fankuchen geometry), Si(400), Si(311), and Si(220). These diffraction planes can provide 6 different neutron wavelengths: approximately 1.45, 1.54, 1.73, 1.89 {angstrom}, 2.27, and 2.66 also incorporate seven position sensitive detectors located in a detector shield box. To use this advanced instrument for scientific and engineering measurements, careful calibration needs to be performed to accurately calibrate the seven position sensitive detectors, neutron wavelength, and 2{theta}{sub 0}. Just as in the X-ray diffraction technique, neutron diffraction directly measures the diffraction angle (2{theta}) or diffraction peak position, then based on Bragg's law and a strain free lattice spacing, the strain can be calculated. Therefore anything that can affect the diffracting angle measurement can influence the accuracy of the strain measurements. The sources of difficulties in achieving accurate neutron diffraction peak positions can be classified into three categories. (1) Instrument - These difficulties come from alignment of the monochromator, alignment of the incident and detector slits, leveling of the sample table, 2{theta}{sub 0} offset, and response of the position sensitive detector; (2) Counting statistics - if the peak profile count is too low, then the peak position derived from fitting a profile and background will have larger error. Therefore, adequate counting statistics and well-defined peaks are always good for precise peak position determination; and (3) Sample - Large grain size materials make it difficult to get enough diffracting grains, contributing to the different profile. With a low number the peak becomes 'spot' and results in inaccuracy in peak position. Texture in the sample can change the effective elastic constants and also affect the peak intensity. Phase and composition inhomogeneity can make it difficult to determine an accurate stress-free d{sub 0} for strain calculation. A partially buried gauge volume due to proximity to the sample surface or buried interface can also shift the peak position. The calibration method presented in this report will address the first two categories of difficulties listed above. The FWHM can be minimized for each sample d-spacing by adjusting the horizontal bending of the monochromator crystal. For the monochromator, the optimum FWHM lies between 70 and 110 degree. This range is selected in order to maintain an approximately equiaxed gauge volume and avoid significant increases in peak breadth for the detectors above and below the horizontal plane. To adequately calibrate the position sensitive detectors, 2{theta}{sub 0}, and wavelength, a set of high purity reference powders were selected. Since the selected reference powders have define grain size is, the measurement errors from sample grain size and texture can be excluded, although there may still be micro-strain in the powders, which can broaden the reference peak. In this report, the calibration procedure for the NRSF2 instrument will be presented and calibration results for five monochromator settings from HFIR cycle 403 will be presented. The monochromator settings calibrated include Si(331)AF (Anti-Fankuche n geomet
Tang, Fei [ORNL; Hubbard, Camden R [ORNL
Beam-Based Alignment
One: One: Single-Bunch Comparative Study of Three Algorithms Peter Tenenbaum LCC-Note-0013 17-February-1999 Abstract We describe the results of a series of simulation studies of beam-based alignment of the NLC main linacs using the program LIAR. Three algorithms for alignment of quadrupoles and girders are consid- ered: the algorithm used in the ZDR, the ZDR algorithm combined with a post-alignment MICADO operation, and an algorithm which requires no steering dipoles but requires twice as many alignment segments per linac as the ZDR algorithm. The third algorithm appears to be the most robust, based on convergence time, required quad mover step sizes, and variation in extracted beam emittance as a function of BNS profile. We also study the effect of structure BPM resolution and ATL misalignments during the alignment process. 1 Introduction Beam-based alignment and steering of the
Colliding Crystalline Beams
Crystalline Beams* are an ordered state of an ensemble of ions, circulating in a storage ring, with very small velocity fluctuations. They can be obtained from ordinary warm ion beams with the application of powerful cooling techniques (stochastic, electron, laser, ...). Depending on the focussing properties and dimensions of the storage ring, and on the ion beam density, several ground states are possible. All of them can be visualized as a bundle of n{sub s} symmetrically distributed, parallel strings. The longitudinal ion separation {lambda} is the same for all strings. The minimum temperature that can be achieved depends on die background noise of the cooling technique used. It is required for stability that the vibration amplitude of the ions is only a fraction of the separation {lambda}.
Haffmans, A.F.; Maletic, D.; Ruggiero, A.G.
Instrument Series: Microscopy Aberration-Corrected Scanning/Transmission
Aberration-Corrected Aberration-Corrected Scanning/Transmission Electron Microscope EMSL's aberration-corrected Titan 80-300(tm) scanning/transmission electron microscope (S/TEM) provides high-resolution imaging with sub-angstrom resolution and spectroscopic capabilities. This state-of-the-art instrument is equipped with a Schottky field-emission electron source, an electron gun monochromator, CEOS hexapole spherical aberration corrector for the probe-forming lens, high-angle annular dark field (HAADF) detector, an X-ray spectrometer (EDS), and a high-resolution Gatan Imaging Filter (GIF). The selection of electron energy between 80 kV and 300 kV enables optimized imaging for a variety of samples, including electron beam sensitive materials. Research Applications
Instrument Series: Microscopy Ultra-High Vacuum, Low- Temperature Scanning
Low- Low- Temperature Scanning Probe Microscope EMSL's ultra-high vacuum, low-temperature scanning probe microscope instrument, or UHV LT SPM, is the preeminent system dedicated to surface chemistry and physics at low temperatures down to 5 K. Operating at low temperatures provides high mechanical stability, superior vacuum conditions, and negligible drift for long-term experiments. With thermal diffusion being entirely suppressed, stable imaging becomes possible even for weakly bound species. The system is primarily used for probing single-site chemical reactivity, while the combination with a hyperthermal molecular beam allows the study of important chemical processes at energies corresponding to the operational temperatures well beyond typical UHV studies. The LT SPM provides
NIST: N42-2011 Neutron Handheld Instruments
... The instrument's location and battery status is reported for each reading. Neutron handheld instrument file: http://physics ...
Portable instrument for inspecting irradiated nuclear-fuel assemblies in a water-filled storage pond by measurement of induced Cerenkov radiation
Nicholson, N.; Dowdy, E.J.; Holt, D.M.; Stump, C.J. Jr.
The Relativistic Heavy Ion Collider (RHIC) at the BNL requires the AGS to provide Gold beam with the intensity of 10{sup 9} ions per bunch. Over the years, the Tandem Van de Graaff has provided steadily increasing intensity of gold ion beams to the AGS Booster. However, the gold beam injection efficiency at the Booster has been found to decrease with the rising intensity of injected beams. As the result, for Tandem beams of the highest intensity, the Booster late intensity is lower than with slightly lower intensity Tandem beam. In this article, the authors present two experiments associated with the Booster injection efficiency and beam intensity. One experiment looks at the Booster injection efficiency by adjusting the Tandem beam intensity, and another looks at the beam life time while scraping the beam in the Booster. The studies suggest that the gold beam injection efficiency at the AGS Booster is related to the beam loss in the ring, rather than the intensity of injected beam or circulating beam. A close look at the effect of the lost gold ion at the Booster injection leads to the prediction that the lost gold ion creates large number of positive ions, and even larger number of electrons. The lost gold beam is also expected to create large numbers of neutral particles. In 1998 heavy ion run, the production of positive ions and electrons due to the lost gold beam has been observed. Also the high vacuum pressure due to the beam loss, presumably because of the neutral particles it created, has been measured. These results will be reported elsewhere.
Summary • • INSTRUMENTATION NEEDS FOR DETERMINING ROCKDepository Design . . • • • . . INSTRUMENTATION NEEDS FORASSESSMENT AND INSTRUMENTATION NEEDS FOR NUCLEAR WASTE
Authors, Various
Beam specie analyzer for intense neutral beams
A three-channel neutral particle energy analyzer has been fabricated and calibrated for H/sup 0/ particles. H/sup 0/ with energies 3.5-55 keV was passed through a N/sub 2/ gas cell maintained at charge equilibrium pressures. H/sup +/ ions formed by stripping collisions were energy analyzed by a 45/sup 0/, parabolic, electrostatic analyzer and detected by three Faraday cups spaced to intercept the full-, half-, and third-energy beam components. The conversion efficiency of the analyzer system increased from 0.11 at 3.5 keV to 0.54 at 55 keV with an accuracy of +- 3%.
Barnett, C.F.; Ray, J.A.
Electron beam dynamics for the ISIS bremsstrahlung beam generation system
An electron beam transport system was designed for use in the Bremsstrahlung Beam Generation System of the Integrated Stand-off Inspection System (ISIS). The purpose of this electron transport system was to provide for ...
Block, Robert E. (Robert Edward)
Void Fraction Instrument operation and maintenance manual
This Operations and Maintenance Manual (O&MM) addresses riser installation, equipment and personnel hazards, operating instructions, calibration, maintenance, removal, and other pertinent information necessary to safely operate and store the Void Fraction Instrument. Final decontamination and decommissioning of the Void Fraction Instrument are not covered in this document.
Borgonovi, G.; Stokes, T.I.; Pearce, K.L.; Martin, J.D.; Gimera, M.; Graves, D.B.
An Intelligent Chilled Mirror Humidity Instrument
An intelligent, chilled mirror humidity instrument has been designed for use on buoys and ships. Our design goal is for the instrument to make high-quality dewpoint temperature measurements for a period of up to one year from an unattended ...
David S. Hosom; Gennaro H. Crescenti; Clifford L. Winget; Sumner Weisman; Donald P. Doucet; James F. Price
Beam current sensor
A current sensor for measuring the dc component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivities in the nano-ampere range.
Kuchnir, M.; Mills, F.E.
A current sensor for measuring the DC component of a beam of charged particles employs a superconducting pick-up loop probe, with twisted superconducting leads in combination with a Superconducting Quantum Interference Device (SQUID) detector. The pick-up probe is in the form of a single-turn loop, or a cylindrical toroid, through which the beam is directed and within which a first magnetic flux is excluded by the Meisner effect. The SQUID detector acts as a flux-to-voltage converter in providing a current to the pick-up loop so as to establish a second magnetic flux within the electrode which nulls out the first magnetic flux. A feedback voltage within the SQUID detector represents the beam current of the particles which transit the pick-up loop. Meisner effect currents prevent changes in the magnetic field within the toroidal pick-up loop and produce a current signal independent of the beam's cross-section and its position within the toroid, while the combination of superconducting elements provides current measurement sensitivites in the nano-ampere range.
Kuchnir, Moyses (Elmhurst, IL); Mills, Frederick E. (Elburn, IL)
Positive and Negative Ion Beam Merging System for Neutral Beam ...
APPLICATIONS OF TECHNOLOGY: Semiconductor manufacturing; Low- and medium-energy ion implantation; Fusion plasma systems requiring neutral beam ...
A neutral beam intensity controller is provided for a neutral beam generator in which a neutral beam is established by accelerating ions from an ion source into a gas neutralizer. An amplitude modulated, rotating magnetic field is applied to the accelerated ion beam in the gas neutralizer to defocus the resultant neutral beam in a controlled manner to achieve intensity control of the neutral beam along the beam axis at constant beam energy. The rotating magnetic field alters the orbits of ions in the gas neutralizer before they are neutralized, thereby controlling the fraction of neutral particles transmitted out of the neutralizer along the central beam axis to a fusion device or the like. The altered path or defocused neutral particles are sprayed onto an actively cooled beam dump disposed perpendicular to the neutral beam axis and having a central open for passage of the focused beam at the central axis of the beamline. Virtually zero therough 100% intensity control is achieved by varying the magnetic field strength without altering the ion source beam intensity or its species yield.
Dagenhart, William K. (Oak Ridge, TN)
Instrumentation @ Catalysis: Reactivity and Structure Group | Chemistry
Instrumentation Instrumentation The Catalysis Group at BNL is leading research initiatives into the development of new tools and techniques that focus on the characterization of heterogeneous catalytic reactions and catalysts using imaging, spectroscopy and scattering techniques and integrated combinations of them under reaction conditions to unravel the morphology, chemical and structural properties, of catalysts, respectively. These efforts revolve around the use of synchrotron radiation (NSLS), electrons (CFN) and quantum tunneling tools with particular thrusts into imaging, spectroscopy and scattering. Groups Instrumentation(BNL) Three UHV chambers with diverse instrumentation for surface characterization: LEED, UPS, XPS, AES, TPD, ISS, PM-AP-IRRAS, Reactivity Cell. All the systems include ancillary instrumentation such as sputtering guns and metal evaporators. The IRRAS system was retrofitted with an ambient pressure (AP) cell on top of the UHV system. The sample can be prepared and characterized in UHV and then transfer in vacuum to the AP cell.
Beam current monitoring in the AGS Booster and its transfer lines
The new AGS Booster is designed to accelerate low intensity polarized protons and heavy ions, and high intensity protons. The wide range of beam parameters and the vacuum, thermal and radiation environment, presented challenges in the instrumentation design. This paper describes the problems and solutions for the beam current monitors in the Booster and its transport lines. Where available, results of the initial operation will be presented. 11 refs., 3 figs.
Witkover, R.L.; Zitvogel, E.; Castillo, V.
Beam experiments towards high-intensity beams in RHIC
Proton bunch intensities in RHIC are planned to be increased from 2 {center_dot} 10{sup 11} to 3 {center_dot} 10{sup 11} protons per bunch to increase the luminosity, together with head-on beam-beam compensation using electron lenses. To study the feasibility of the intensity increase, beam experiments are being performed. Recent experimental results are presented.
Montag C.; Ahrens, L.; Brennan, J.M.; Blaskiewicz, M.; Drees, A.; Fischer, W.; Hayes, T.; Huang, H.; Mernick, K.; Robert-Demolaize, G.; Smith, K.; Than, R.; Thieberger, P.; Yip, K.; Zeno, K.; Zhang, S.Y.
Instrument and method for focusing x rays, gamma rays, and neutrons
A crystal-diffraction instrument or diffraction-grating instrument is described with an improved crystalline structure or grating spacing structure having a face for receiving a beam of photons or neutrons and diffraction planar spacing or grating spacing along that face with the spacing increasing progressively along the face to provide a decreasing Bragg diffraction angle for a monochromatic radiation and thereby increasing the usable area and acceptance angle. The increased planar spacing for the diffraction crystal is provided by the use of a temperature differential across the line structures with different compositions, by an individual crystalline structure with a varying composition and thereby a changing planar spacing along its face, and by combinations of these techniques. The increased diffraction grating element spacing is generated during the fabrication of the diffraction grating by controlling the cutting tool that is cutting the grooves or controlling the laser beam, electron beam, or ion beam that is exposing the resist layer, etc. It is also possible to vary this variation in grating spacing by applying a thermal gradient to the diffraction grating in much the same manner as is done in the crystal-diffraction case.
Smither, R.K.
Advanced Instrumentation for Extreme Environments
The Department of Energy (DOE) Office of Nuclear Energy (NE) is pursuing embedded instrumentation and controls (I&C) technology for next generation nuclear power generation applications. Embedded systems encompass a wide range of configurations and technologies; we define embedding in this instance as the integration of the sensors and the control system design into the component design using a systems engineering process. Embedded I&C systems are often an essential part of developing new capabilities, improving reliability, enhancing performance, and reducing operational costs. The new intrinsically safe, more efficient, and cost effective reactor technologies (Next Generation Nuclear Plant and Small Modular Reactors) require the development and application of new I&C technologies. These new designs raise extreme environmental challenges such as high temperatures (over 700 C) and material compatibility (e.g., molten salts). The desired reliability and functionality requires measurements in these extreme conditions including high radiation environments which were not previously monitored in real time. The DOE/NE Nuclear Energy Enabling Technologies (NEET) program currently has several projects investigating I&C technologies necessary to make these reactor designs realizable. The project described in this paper has the specific goal of investigating embedded I&C with the following objectives: 1.Explore and quantify the potential gains from embedded I&C improved reliability, increased performance, and reduced cost 2.Identify practical control, sensing, and measurement techniques for the extreme environments found in high-temperature reactors 3.Design and fabricate a functional prototype high-temperature cooling pump for molten salts represents target demonstration of improved performance, reliability, and widespread usage There are many engineering challenges in the design of a high-temperature liquid salt cooling pump. The pump and motor are in direct contact with molten fluoride salt at 700 C (1,292 F) as part of a reactor cooling loop. The motor-pump combination during normal operation would be red-hot (Figure 1). This environment challenges every facet of the design including seals, wiring, magnetic materials, and sensors. In this paper, we discuss the challenges of sensor design in extreme environments and specifically the sensor design for a high-temperature fluoride salt coolant pump. This pump will be used as a test-bed for embedded I&C development and validation in extreme environments.
Melin, Alexander M [ORNL; Kisner, Roger [ORNL; Fugate, David L [ORNL
Dependence of the Photon Beam Characteristics on Electron Beam Parameters in Third Generation Synchrotron Light Sources
Ivanyan, M I; Tsakanov, V M
Beam-stack search: Integrating backtracking with beam search
We describe a method for transforming beam search into a complete search algorithm that is guaranteed to find an optimal solution. Called beam-stack search, the algorithm uses a new data structure, called a beam stack, that makes it possible to integrate systematic backtracking with beam search. The resulting search algorithm is an anytime algorithm that finds a good, sub-optimal solution quickly, like beam search, and then backtracks and continues to find improved solutions until convergence to an optimal solution. We describe a memory-efficient implementation of beam-stack search, called divide-and-conquer beam-stack search, as well as an iterative-deepening version of the algorithm. The approach is applied to domain-independent STRIPS planning, and computational results show its advantages.
Rong Zhou; Eric A. Hansen
Advanced Sensors and Instrumentation | Department of Energy
Sensors and Instrumentation Sensors and Instrumentation Advanced Sensors and Instrumentation The ASI subprogram plans to develop the scientific basis for sensors and supporting infrastructure technology that will address crosscutting technology gaps relating to measurements at existing and advanced nuclear power plants as well as within their fuel cycles. The focus of the program is on the following technical challenges and objectives: Identify needed physical measurement accuracy of nuclear system process parameters and minimize uncertainty. Identify and conduct research into monitoring and control technologies, including human factors, to achieve control of new nuclear energy processes, and new methodologies for monitoring to achieve high reliability and availability. Integrate control of multiple processes, potential reductions in
Licenses Available in Analytical Instrumentation | ORNL
Analytical Instrumentation Analytical Instrumentation SHARE Analytical Instrumentation 199700361 Neutron Detection Using an Embedded Sol-Gel Neutron Absorber 199700370 Bioluminescent Bioreporter Integrated Circuits 199900683 Microscale Ion Trap Mass Spectrometer 200101009 Automated Sampling for Microarray Readout Using Electrospray Mass Spectrometry 200201069 Planar Flow-By Electrode Capacitive Electrospray Ion Source 200201145 Fluorescent Nanoparticles for Radiation Detection 200301290 Pulse Thermal Processing of Functional Materials Using a Directed Plasma Arc 200401367 Composite Solid-State Scintillators for Neutron Detection 200501505 Resistive-Glass Drift Tube for Use as a Controlled Kinetic Energy Ion Source 200601675 Functionalized Gold Nanoparticles for Rapid,
Instrument calibration using the pneumatic deadweight tester
One of the most difficult problems facing the instrument engineer is the accurate calibration of orifice meters, particularly at remote or inaccessible locations. The object of this paper is to describe a unique solution to this problem, an automatic pneumatic deadweight tester utilizing the floating ball principle. The Ametek Model PK Pneumatic Deadweight Tester is an ideal instrument to use for the calibration of orifice meters. This instrument provides unexcelled accuracy combined with reliable operation and ease of use for both field and laboratory calibration. It has been accepted by most of the gas transmission companies as a pressure standard for meter calibration.
Johnson, E.R.
Laser beam guard clamps
A quick insert and release laser beam guard panel clamping apparatus having a base plate mountable on an optical table, a first jaw affixed to the base plate, and a spring-loaded second jaw slidably carried by the base plate to exert a clamping force. The first and second jaws each having a face acutely angled relative to the other face to form a V-shaped, open channel mouth, which enables wedge-action jaw separation by and subsequent clamping of a laser beam guard panel inserted through the open channel mouth. Preferably, the clamping apparatus also includes a support structure having an open slot aperture which is positioned over and parallel with the open channel mouth.
Dickson, Richard K. (Stockton, CA)
Target Diagnostic Instrument-Based Controls Framework for the National Ignition Facility
NIF target diagnostics are being developed to observe and measure the extreme physics of targets irradiated by the 192-beam laser. The response time of target materials can be on the order of 100ps--the time it takes light to travel 3 cm--temperatures more than 100 times hotter than the surface of the sun, and pressures that exceed 109 atmospheres. Optical and x-ray diagnostics were developed and fielded to observe and record the results of the first 4-beam experiments at NIF. Hard and soft x-ray spectra were measured, and time-integrated and gated x-ray images of hydrodynamics experiments were recorded. Optical diagnostics recorded backscatter from the target, and VISAR laser velocimetry measurements were taken of laser-shocked target surfaces. Additional diagnostics are being developed and commissioned to observe and diagnose ignition implosions, including various neutron and activation diagnostics. NIF's diagnostics are being developed at LLNL and with collaborators at other sites. To accommodate the growing number of target diagnostics, an Instrument-Based Controls hardware-software framework has been developed to facilitate development and ease integration into the NIF Integrated Computer Control System (ICCS). Individual WindowsXP PC controllers for each digitizer, power supply and camera (i.e., instruments) execute controls software unique to each instrument model. Each hardware-software controller manages a single instrument, in contrast to the complexity of combining all the controls software needed for a diagnostic into a single controller. Because of this simplification, controllers can be more easily tested on the actual hardware, evaluating all normal and off-normal conditions. Each target diagnostic is then supported by a number of instruments, each with its own hardware-software instrument-based controller. Advantages of the instrument-based control architecture and framework include reusability, testability, and improved reliability of the deployed hardware and software. Since the same instruments are commonly used on many different diagnostics, the controllers are reusable by replicating the hardware and software as a unit and reconfiguring the controller using configuration files for the specific diagnostic. Diagnostics are fully integrated and interoperable with ICCS supervisory and shot controls using these configuration files to drive the diagnostics' instrument-based controllers.
Shelton, R; O'Brien, D; Nelson, J; Kamperschroer, J
1-5 1-5 Nov. 05, 2007 Nov. 06, 2007 Nov. 07, 2007 Nov. 08, 2007 Nov. 09, 2007 Nov. 10, 2007 Nov. 11, 2007 Unscheduled FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI BEAM LINE 7-1 Nov. 05, 2007 Nov. 06, 2007 Nov. 07, 2007 Nov. 08, 2007 Nov. 09, 2007 Nov. 10, 2007 Nov. 11, 2007 Unscheduled FACI FACI FACI FACI FACI FACI
4 4 Mar. 15, 2004 Mar. 16, 2004 Mar. 17, 2004 Mar. 18, 2004 Mar. 19, 2004 Mar. 20, 2004 Mar. 21, 2004 DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN BEAM LINE 1-5 Mar. 15, 2004 Mar. 16, 2004 Mar. 17, 2004 Mar. 18, 2004 Mar. 19, 2004 Mar. 20, 2004 Mar. 21, 2004 DOWN DOWN DOWN DOWN DOWN DOWN DOWN
5-1 5-1 Nov. 28, 2005 Nov. 29, 2005 Nov. 30, 2005 Dec. 01, 2005 Dec. 02, 2005 Dec. 03, 2005 Dec. 04, 2005 MA FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI BEAM LINE 5-2 Nov. 28, 2005 Nov. 29, 2005 Nov. 30, 2005 Dec. 01, 2005 Dec. 02, 2005 Dec. 03, 2005 Dec. 04, 2005 MA FACI FACI FACI FACI FACI FACI
1-5 1-5 Nov. 10, 2008 Nov. 11, 2008 Nov. 12, 2008 Nov. 13, 2008 Nov. 14, 2008 Nov. 15, 2008 Nov. 16, 2008 DOWN FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI FACI BEAM LINE 7-1 Nov. 10, 2008 Nov. 11, 2008 Nov. 12, 2008 Nov. 13, 2008 Nov. 14, 2008 Nov. 15, 2008 Nov. 16, 2008 DOWN FACI FACI FACI FACI FACI FACI
Ion beam generating apparatus
An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam.
Brown, Ian G. (1088 Woodside Rd., Berkeley, CA 94708); Galvin, James (2 Commodore #276, Emeryville, CA 94608)
An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam. 10 figs.
Brown, I.G.; Galvin, J.
Relativistic electron beam device
A design is given for an electron beam device for irradiating spherical hydrogen isotope bearing targets. The accelerator, which includes hollow cathodes facing each other, injects an anode plasma between the cathodes and produces an approximately 10 nanosecond, megajoule pulse between the anode plasma and the cathodes. Targets may be repetitively positioned within the plasma between the cathodes, and accelerator diode arrangement permits materials to survive operation in a fusion power source. (auth)
Freeman, J.R.; Poukey, J.W.; Shope, S.L.; Yonas, G.
Stationary nonlinear Airy beams
We demonstrate the existence of an additional class of stationary accelerating Airy wave forms that exist in the presence of third-order (Kerr) nonlinearity and nonlinear losses. Numerical simulations and experiments, in agreement with the analytical model, highlight how these stationary solutions sustain the nonlinear evolution of Airy beams. The generic nature of the Airy solution allows extension of these results to other settings, and a variety of applications are suggested.
Lotti, A. [Dipartimento di Fisica e Matematica, Universita del'Insubria, Via Valleggio 11, I-22100 Como (Italy); Centre de Physique Theorique, CNRS, Ecole Polytechnique, F-91128 Palaiseau (France); Faccio, D. [Dipartimento di Fisica e Matematica, Universita del'Insubria, Via Valleggio 11, I-22100 Como (Italy); School of Engineering and Physical Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Couairon, A. [Centre de Physique Theorique, CNRS, Ecole Polytechnique, F-91128 Palaiseau (France); Papazoglou, D. G. [Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology, Hellas (FORTH), P.O. Box 1527, GR-71110 Heraklion (Greece); Materials Science and Technology Department, University of Crete, GR-71003 Heraklion (Greece); Panagiotopoulos, P.; Tzortzakis, S. [Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology, Hellas (FORTH), P.O. Box 1527, GR-71110 Heraklion (Greece); Abdollahpour, D. [Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology, Hellas (FORTH), P.O. Box 1527, GR-71110 Heraklion (Greece); Physics Department, University of Crete, GR-71003 Heraklion (Greece)
A Stripline Fast Faraday Cup for measuring GHz structure of ion beams
The Stripline Fast Faraday Cup is a device which is used to quantitatively and qualitatively measure gigahertz time structure characteristics of ion beams with energies up to at least 30 Mev per nucleon. A stripline geometry is employed in conjunction with an electrostatic screen and a Faraday cup to provide for analysis of the structural characteristics of an ion beam. The stripline geometry allows for a large reduction in the size of the instrument while the electrostatic screen permits measurements of the properties associated with low speed ion beams.
Bogaty, J.M.
Instrumentation upgrades for the Macromolecular Crystallography beamlines
Instrumentation upgrades for the Macromolecular Crystallography beamlines Instrumentation upgrades for the Macromolecular Crystallography beamlines of the Swiss Light Source Monday, October 29, 2012 - 2:00am SSRL, Bldg. 137, Rm. 322 Martin Fuchs, MX Group, Swiss Light Source; Paul Scherrer Institute (Villigen, Switzerland) A new unified diffractometer - the D3 - has been developed for the three MX beamlines. The first of the instruments is in general user operation at beamline X10SA since April 2012. The varied demands from both challenging academic research projects as well as high throughput industrial applications on today's macromolecular crystallography beamlines drive developments to both endstations and beamline optics. Recent instrumentation upgrades to the macromolecular crystallography (MX) beamlines of the Swiss Light Source therefore aimed to
Dewcon Instruments Inc | Open Energy Information
Dewcon Instruments Inc Dewcon Instruments Inc Jump to: navigation, search Name Dewcon Instruments Inc Place Palatine, Illinois Product A process instrumentation company specialising in moisture sensors, analysers, meters, hygrometers and probes for on-line humidity and dew point measurement and control in drying, chemical and pharmaceutical applications. Coordinates 42.949081°, -74.557237° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.949081,"lon":-74.557237,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
ARM - Campaign Instrument - pyran-yankee-isothermal
yankee-isothermal Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : Yankee Isothermal Pyranometer...
ARM - Campaign Instrument - aerosol-tower-eml
govInstrumentsaerosol-tower-eml Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : EML Tower based Aerosol...
Cellular telephone-based radiation detection instrument
A network of radiation detection instruments, each having a small solid state radiation sensor module integrated into a cellular phone for providing radiation detection data and analysis directly to a user. The sensor module includes a solid-state crystal bonded to an ASIC readout providing a low cost, low power, light weight compact instrument to detect and measure radiation energies in the local ambient radiation field. In particular, the photon energy, time of event, and location of the detection instrument at the time of detection is recorded for real time transmission to a central data collection/analysis system. The collected data from the entire network of radiation detection instruments are combined by intelligent correlation/analysis algorithms which map the background radiation and detect, identify and track radiation anomalies in the region.
Craig, William W. (Pittsburg, CA); Labov, Simon E. (Berkeley, CA)
Field instrumentation for vocalizing avian survey
We present automated instruments to facilitate the monitoring of vocalizing species in their environment with minimal disruption. These devices offer recording and acoustic localization of bird calls and relay data via the ...
Elliott, Grant (Grant Andrew)
ARM - Campaign Instrument - synoptic-maps
govInstrumentssynoptic-maps Comments? We would love to hear from you Send us a note below or call us at 1-888-ARM-DATA. Send Campaign Instrument : National Climatic Data Center...
Optimization of naďve dynamic binary instrumentation Tools/
The proliferation of dynamic program analysis tools has done much to ease the burden of developing complex software. However, creating such tools remains a challenge. Dynamic binary instrumentation frameworks such as ...
Kleckner, Reid (Reid N.)
Supersaturation in the Wyoming CCN Instrument
Two thermal diffusion cloud condensation nuclei (CCN) instruments were intercompared using a nearly monodisperse test aerosol composed of sodium chloride and ammonium sulfate. The main objective of this work is the determination of the maximum ...
Jefferson R. Snider; Markus D. Petters; Perry Wechsler; Peter S. K. Liu
Scientific Assessment of the SWIFT Instrument Design
The Stratospheric Wind Interferometer For Transport studies (SWIFT) is a proposed satellite instrument. SWIFT is an imaging, field-widened Doppler Michelson interferometer. It observes a thermal IR atmospheric emission line in a limb-viewing ...
Peyman Rahnama; William A. Gault; Ian C. McDade; Gordon G. Shepherd
The GATE Boundary Layer Instrumentation System (BLIS)
A tethered sonde, the Boundary Layer Instrument System (BLIS), was designed for use from shipboard platforms in the GARP Atlantic Tropical Experiment (GATE). This system was able to monitor the thermal and kinematic properties of the boundary ...
Donald P. Wylie; Chester F. Ropelewski
The Underway Conductivity–Temperature–Depth Instrument
The development of the Underway Conductivity–Temperature–Depth (UCTD) instrument is motivated by the desire for inexpensive profiles of temperature and salinity from underway vessels, including volunteer observing ships (VOSs) and research ...
Daniel L. Rudnick; Jochen Klinke
X-Ray Nanoimaging: Instruments and Methods
X-Ray Nanoimaging: Instruments and Methods To be held as part of SPIE. http:spie.orgOP318 August 28-29, 2013; San Diego, California, USA...
An instrument for crushing-strength determinations of uncoated and pyrolytic-carbon-coated fuel particles (50 to 500 mu in diameter) was developed to relate the crushing strength of the particles to their fabricability. The instrument consists of a loading mechanism, load cell, and a power supply-readout unit. The information that can be obtained by statistical methods of the data analysis is illustrated by results on two batches of fuel particles. (auth)
Hallerman, G.; Gray, R.J.
ACRF Instrumentation Status: New, Current, and Future May 2007
The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Program Climate Research Facility instrumentation status. The report is divided into four sections: (1) new instrumentation in the process of being acquired and deployed, (2) existing instrumentation and progress on improvements or upgrades, (3) proposed future instrumentation, and (4) Small Business Innovation Research instrument development.
JC Liljegren
ACRF Instrumentation Status: New, Current, and Future February 2007
The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Program Climate Research Facility instrumentation status. The report is divided into four sections: (1) new instrumentation in the process of being acquired and deployed, (2) existing instrumentation and progress on improvements or upgrades, (3) proposed future instrumentation, and (4) Small Business Innovation Research instrument development
Construction of the SCRIBES (Sensitive Cooled Resolved Ion BEam Spectroscopy) Instrument for the Detection of Astrochemically
, R., Carlson, C., Korth, A., Reme, H., & Mendis, D. 1992, Icarus, 98, 125 Mitchell, D., et al. 1987
McCall, Benjamin J.
A L S many other 3rd generation sources have been and arcthe soft x-ray third generation light source ever built, andconstructed third generation light sources. In this paper we
Target Diagnostic Instrument-Based Controls Framework for the National Ignition Facility (NIF)
The extreme physics of targets shocked by NIF's 192-beam laser are observed by a diverse suite of diagnostics including optical backscatter, time-integrated and gated X-ray sensors, and laser velocity interferometry. Diagnostics to diagnose fusion ignition implosion and neutron emissions are being planned. Many diagnostics will be developed by collaborators at other sites, but ad hoc controls could lead to unreliable and costly operations. An instrument-based controls (I-BC) framework for both hardware and software facilitates development and eases integration. Each complex diagnostic typically uses an ensemble of electronic instruments attached to sensors, digitizers, cameras, and other devices. In the I-BC architecture each instrument is interfaced to a low-cost Windows XP processor and Java application. Each instrument is aggregated with others as needed in the supervisory system to form an integrated diagnostic. The Java framework provides data management, control services and operator GUI generation. I-BCs are reusable by replication and reconfiguration for specific diagnostics in XML. Advantages include minimal application code, easy testing, and better reliability. Collaborators save costs by assembling diagnostics with existing I-BCs. This paper discusses target diagnostic instrumentation used on NIF and presents the I-BC architecture and framework.
Shelton, R T; O'Brien, D W; Kamperschroer, J H; Nelson, J R
Beam-Beam Interaction Simulations with Guinea Pig
5 5 SLAC-TN-03-070 September 2003 Beam-Beam Interaction Simulations with Guinea Pig C. Sramek, T. O. Raubenheimer, A. Seryi, M. Woods, J. Yu Stanford Linear Accelerator Center Stanford University Stanford, CA Abstract: At the interaction point of a particle accelerator, various phenomena occur that are known as beam-beam effects. Incident bunches of electrons (or positrons) experience strong electromagnetic fields from the opposing bunches, which leads to electron deflection, beamstrahlung and the creation of electron/positron pairs and hadrons due to two-photon exchange. In addition, the beams experience a "pinch effect" which focuses each beam and results in either a reduction or expansion of their vertical size. Finally, if a
Studies of beam halo became unavoidable feature of high-intensity machines where uncontrolled beam loss should be kept to extremely small level. For a well controlled stable beam such a loss is typically associated with the low density halo surrounding beam core. In order to minimize uncontrolled beam loss or improve performance of an accelerator, it is very important to understand what are the sources of halo formation in a specific machine of interest. The dominant mechanisms are, in fact, different in linear accelerators, circular machines or Energy Recovering Linacs (ERL). In this paper, we summarize basic mechanisms of halo formation in high-intensity beams and discuss their application to various types of accelerators of interest, such as linacs, rings and ERL.
A low energy beam transport system for proton beam
A low energy beam transport (LEBT) system has been built for a compact pulsed hadron source (CPHS) at Tsinghua University in China. The LEBT, consisting of two solenoids and three short-drift sections, transports a pulsed proton beam of 60 mA of energy of 50 keV to the entrance of a radio frequency quadrupole (RFQ). Measurement has shown a normalized RMS beam emittance less than 0.2 {pi} mm mrad at the end of the LEBT. Beam simulations were carried out to compare with the measurement and are in good agreement. Based on the successful CPHS LEBT development, a new LEBT for a China ADS projector has been designed. The features of the new design, including a beam chopper and beam simulations of the LEBT are presented and discussed along with CPHS LEBT development in this article.
Yang, Y. [Institute of Modern Physics, CAS, Lanzhou 730000 (China); University of Chinese Academy of Sciences, Beijing 100039 (China); Zhang, Z. M.; Wu, Q.; Zhang, W. H.; Ma, H. Y.; Sun, L. T.; Zhang, X. Z.; Liu, Z. W.; He, Y.; Zhao, H. W.; Xie, D. Z. [Institute of Modern Physics, CAS, Lanzhou 730000 (China)
Extended Commissioning and Calibration of the Dual-Beam Imaging Polarimeter
In our previous paper (Masiero et al. 2007) we presented the design and initial calibrations of the Dual-Beam Imaging Polarimeter (DBIP), a new optical instrument for the University of Hawaii's 2.2 m telescope on the summit of Mauna Kea, Hawaii. In this followup work we discuss our full-Stokes mode commissioning including crosstalk determination and our typical observing methodology.
Joseph Masiero; Klaus Hodapp; David Harrington; Haosheng Lin
... nuclear carbon dioxide discharges are comparable to wind and hydropower ... developing techniques using focused ion beam (FIB) milling to section ...
SMSD Microanalysis Research Group Environment Program
Environment. Summary: Behavior and effects of environmental nanoparticles are analyzed using model systems and focused ion beam scanning ...
Lead-Free Surface Finishes for Electronic Components: Tin ...
... tin with the substrate. Our focused ion beam (FIB) milling has revealed this internal microstructure. We have also developed ...
Fatigue and Fracture - Programmaster.org
Aug 3, 2010... electron microscope and focused ion beam, where specimen manipulation, transfer, and alignment are performed using a manipulator.
1-4 1-4 Oct. 30, 2006 Oct. 31, 2006 Nov. 01, 2006 Nov. 02, 2006 Nov. 03, 2006 Nov. 04, 2006 Nov. 05, 2006 DOWN Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled Unscheduled BEAM LINE 2-1 Oct. 30, 2006 Oct. 31, 2006 Nov. 01, 2006 Nov. 02, 2006 Nov. 03, 2006 Nov. 04, 2006 Nov. 05, 2006 DOWN 8859 B.JOHNSON 8859 B.JOHNSON 8859 B.JOHNSON 8859 B.JOHNSON 8859 B.JOHNSON 8859 B.JOHNSON
5 5 Mar. 15, 2004 Mar. 16, 2004 Mar. 17, 2004 Mar. 18, 2004 Mar. 19, 2004 Mar. 20, 2004 Mar. 21, 2004 DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN DOWN BEAM LINE 9-1 Mar. 15, 2004 Mar. 16, 2004 Mar. 17, 2004 Mar. 18, 2004 Mar. 19, 2004 Mar. 20, 2004 Mar. 21, 2004 Unscheduled CHANGE/8837 A.COHE 8837 A.COHEN 8837 A.COHEN 8837 A.COHEN 8837 A.COHEN 8837 A.COHEN
Enabling instrumentation and technology for 21st century light sources
in: Synchrotron Radiation Instrumentation Conference SRI09,2008 Workshop, Journal of Instrumentation, IOP. Detectors Aa t t o s e c o n d instrumentation, photon detectors f o r
Byrd, J.M.
Model-based performance instrumentation of distributed applications
Problems such as inconsistent or erroneous instrumentation often plague applications whose source code ismanually instrumented during the implementation phase. Integrating performance instrumentation capabilities into theModel Driven Software Development ...
Jan Schaefer; Jeanne Stynes; Reinhold Kroeger
Precision Absolute Beam Current Measurement of Low Power Electron Beam
Precise measurements of low power CW electron beam current for the Jefferson Lab Nuclear Physics program have been performed using a Tungsten calorimeter. This paper describes the rationale for the choice of the calorimeter technique, as well as the design and calibration of the device. The calorimeter is in use presently to provide a 1% absolute current measurement of CW electron beam with 50 to 500 nA of average beam current and 1-3 GeV beam energy. Results from these recent measurements will also be presented.
Ali, M. M.; Bevins, M. E.; Degtiarenko, P.; Freyberger, A.; Krafft, G. A.
Matter in Extreme Conditions Instrument - Conceptual Design Report
The SLAC National Accelerator Laboratory (SLAC), in collaboration with Argonne National Laboratory (ANL), Lawrence Livermore National Laboratory (LLNL), and the University of California at Los Angeles (UCLA), is constructing a Free-Electron Laser (FEL) research facility. The FEL has already met its performance goals in the wavelength range 1.5 nm - 0.15 nm. This facility, the Linac Coherent Light Source (LCLS), utilizes the SLAC 2-Mile Linear Accelerator (linac) and will produce sub-picosecond pulses of short wavelength X-rays with very high peak brightness and almost complete transverse coherence. The final one-third of the SLAC linac is used as the source of electrons for the LCLS. The high energy electrons are transported across the SLAC Research Yard, into a tunnel which houses a long undulator. In passing through the undulator, the electrons are bunched by the force of their own synchrotron radiation and produce an intense, monochromatic, spatially coherent beam of X-rays. By varying the electron energy, the FEL X-ray wavelength is tunable from 1.5 nm to 0.15 nm. The LCLS includes two experimental halls as well as X-ray optics and infrastructure necessary to create a facility that can be developed for research in a variety of disciplines such as atomic physics, materials science, plasma physics and biosciences. This Conceptual Design Report, the authors believe, confirms the feasibility of designing and constructing an X-ray instrument in order to exploit the unique scientific capability of LCLS by creating extreme conditions and study the behavior of plasma under those controlled conditions. This instrument will address the Office of Science, Fusion Energy Sciences, mission objective related to study of Plasma and Warm Dense Matter as described in the report titled LCLS, the First Experiments, prepared by the LCLS Scientific Advisory Committee (SAC) in September 2000. The technical objective of the LCLS Matter in Extreme Conditions (MEC) Instrument project is to design, build, and install at the LCLS an X-ray instrument that will complement the initial instrument suite included in the LCLS construction and the LUSI Major Item of Equipment (MIE) Instruments. As the science programs advance and new technological challenges appear, instrumentation must be developed and ready to conquer these new opportunities. The MEC concept has been developed in close consultation with the scientific community through a series of workshops team meetings and focused reviews. In particular, the MEC instrument has been identified as meeting one of the most urgent needs of the scientific community based on the advice of the LCLS Scientific Advisory Committee (SAC) in response to an open call for letters of intent (LOI) from the breadth of the scientific community. The primary purpose of the MEC instrument is to create High Energy Density (HED) matter and measure its physical properties. There are three primary elements of the MEC instrument: (A) Optical laser drivers that will create HED states by irradiation in several ways and provide diagnostics capability; (B) The LCLS x-ray free electron laser, which will provide the unique capability to create, probe and selectively pump HED states; and, (C) A suite of diagnostic devices required to observe the evolution of the HED state. These elements when combined in the MEC instrument meet the 'Mission Need' as defined in CD-0. For the purposes of the description we separate the types of experiments to be performed into three categories: (1) High pressure: Here we are interested in the generation of high pressure using the optical lasers to irradiate a surface that ablates and drives a pressure wave into a sample, similar to a piston. The pressures that can be reached exceed 1 Mbar and the properties of interest are for example, the reflectivity, conductivity, opacity as well as the changes driven by the pressure wave on, e.g., condensed matter structure. These phenomena will be studied by means of diffraction measurements, measurements of the pressure wave characteristics, in situ probing by
Boyce, R.F.; Boyce, R.M.; Haller, G.; Hastings, J.B.; Hays, G.; Lee, H.J.; /SLAC; Lee, R.W.; /LLNL, Livermore; Nagler, B.; /Rutherford; Scharfenstein, M.; Marsh, D.; White, W.E.; /SLAC
Magnetically operated beam dump for dumping high power beams in a neutral beamline
It is an object of this invention to provide a beam dump system for a neutral beam generator which lowers the time-averaged power density of the beam dump impingement surface. Another object of this invention is to provide a beam dump system for a neutral particle beam based on reionization and subsequent magnetic beam position modulation of the beam onto a beam dump surface to lower the time-averaged power density of the beam dump ion impingement surface.
LANL: Ion Beam Materials Laboratory
Ion Beam Materials Laboratory (IBML) is a Los Ion Beam Materials Laboratory (IBML) is a Los Alamos National Laboratory resource devoted to materi- als research through the use of ion beams. Current major research areas include surface characterization through ion beam analysis techniques, surface modification and materials synthesis through ion implantation technology, and radiation damage stud- ies in gases, liquids, and solids. The laboratory's core is a 3.2 MV tandem ion accelerator and a 200 kV ion implanter together with several beam lines. Attached to each beam line is a series of experimental stations that support various research programs. The operation of IBML and its interactions with users are organized around core facilities and experimental stations. The IBML provides and operates the core facilities as well as supports
Beam-line cryopump
A cryopumping module using metallic surfaces at liquid helium temperature for condensation of hydrogen and deuterium gas has been constructed. This pump, a prototype of four units which will provide pumping for the Livermore 200 kV test stand, will be used to verify the concept and establish engineering parameters. Upon completion of engineering tests and evaluation the pump will be installed in an operating beam line. The design point pumping capacity is 80,000 liters per second for hydrogen and deuterium at 10$sup -4$ torr based on sticking coefficients of 0.15 and 0.25, respectively. Both the liquid helium temperature pumping surface and the liquid nitrogen temperature radiation shields are constructed of quilted double wall cylindrical shells. The pumping shell dimensions are 1.5 meters dia. x 0.6 meters long. Cryogen circulation is convection current driven in both cases. Liquid helium is supplied from an overhead Dewar through bayonet coupling. In the 200 kV beam line, pumping modules will be supplied via transfer lines from a central Dewar. Voltage standoff will be accomplished in the transfer lines. (auth)
Duffy, T.J.; Oddon, L.D.
Spring/dimple instrument tube restraint
A nuclear fuel assembly for a pressurized water nuclear reactor has a spring and dimple structure formed in a non-radioactive insert tube placed in the top of a sensor receiving instrumentation tube thimble disposed in the fuel assembly and attached at a top nozzle, a bottom nozzle, and intermediate grids. The instrumentation tube thimble is open at the top, where the sensor or its connection extends through the cooling water for coupling to a sensor signal processor. The spring and dimple insert tube is mounted within the instrumentation tube thimble and extends downwardly adjacent the top. The springs and dimples restrain the sensor and its connections against lateral displacement causing impact with the instrumentation tube thimble due to the strong axial flow of cooling water. The instrumentation tube has a stainless steel outer sleeve and a zirconium alloy inner sleeve below the insert tube adjacent the top. The insert tube is relatively non-radioactivated inconel alloy. The opposed springs and dimples are formed on diametrically opposite inner walls of the insert tube, the springs being formed as spaced axial cuts in the insert tube, with a web of the insert tube between the cuts bowed radially inwardly for forming the spring, and the dimples being formed as radially inward protrusions opposed to the springs. 7 figures.
DeMario, E.E.; Lawson, C.N.
A nuclear fuel assembly for a pressurized water nuclear reactor has a spring and dimple structure formed in a non-radioactive insert tube placed in the top of a sensor receiving instrumentation tube thimble disposed in the fuel assembly and attached at a top nozzle, a bottom nozzle, and intermediate grids. The instrumentation tube thimble is open at the top, where the sensor or its connection extends through the cooling water for coupling to a sensor signal processor. The spring and dimple insert tube is mounted within the instrumentation tube thimble and extends downwardly adjacent the top. The springs and dimples restrain the sensor and its connections against lateral displacement causing impact with the instrumentation tube thimble due to the strong axial flow of cooling water. The instrumentation tube has a stainless steel outer sleeve and a zirconium alloy inner sleeve below the insert tube adjacent the top. The insert tube is relatively non-radioactivated inconel alloy. The opposed springs and dimples are formed on diametrically opposite inner walls of the insert tube, the springs being formed as spaced axial cuts in the insert tube, with a web of the insert tube between the cuts bowed radially inwardly for forming the spring, and the dimples being formed as radially inward protrusions opposed to the springs.
DeMario, Edmund E. (Columbia, SC); Lawson, Charles N. (Columbia, SC)
A new Loan-Stock Financial Instrument
A new financial instrument (a new kind of a loan) is introduced. The loan-stock instrument (LSI) combines fixed rate instruments (loans, etc.) with other financial instruments that have higher volatilities and returns (stocks, mutual funds, currencies, derivatives, options, etc.). This new loan depends on the value of underlying security (for example, stock) in such a way that when underlying security increases, the value of loan decreases and backwards. The procedure to create a risk free portfolio and a technique to fairly price the LSI is described. The philosophy behind this procedure is quite similar to the Black-Scholes formalism in option theory. Creation of the risk free portfolio is possible because the change in the underlying security offsets the change in the value of the loan (or the amount that the borrower has to repay). The new financial instrument takes an advantage of the fact that on average the stock market grows in time. It is beneficial for both the borrower and the lender. The LSI is more attractive for the borrower than the traditional loan is due to the decrease in the amount that has to be repaid. This attractiveness constitutes the benefit for the lender in terms of the market share among the borrowers. In addition, the lender can charge the extra premium.
Alexander Morozovsky; Rajan Narasimhan; Yuri Kholodenko
Instrumentation for Southem Great Plains D. L. Sisterson and...
counties are outlined. 318 Instrumentation for Southern Great Plains Table 1. Dates of installations of Instrumentation, side data system versions, and facilities at the SGP...
OPTICAL INSTRUMENTATION FOR REACTOR SAFETY STUDIES B.T.OPTICAL INSTRUMENTATION FOR REACTOR SAFETY STUDIES B.T.instru mentation for reactor safety studies is described.
"Insurance as a Risk Management Instrument for Energy Infrastructure...
"Insurance as a Risk Management Instrument for Energy Infrastructure Security and Resilience" Report Now Available "Insurance as a Risk Management Instrument for Energy...
Data Acquisition System - Instrument Support | ORNL Neutron Sciences
Acquisition & Controls The RAD Instrument Data Acquisition and Controls Group supports SNS neutron instruments by designing, building and maintaining custom electronics and...
Utilization of instrumentation data to improve distributed multimedia processing.
??Instrumentation is ubiquitous in computer software today though its use in parallel processing frameworks is not widespread. In this thesis, we have developed an instrumentation… (more)
Kristoffersen, Stĺle B
A pencil beam algorithm for helium ion beam therapy
Purpose: To develop a flexible pencil beam algorithm for helium ion beam therapy. Dose distributions were calculated using the newly developed pencil beam algorithm and validated using Monte Carlo (MC) methods. Methods: The algorithm was based on the established theory of fluence weighted elemental pencil beam (PB) kernels. Using a new real-time splitting approach, a minimization routine selects the optimal shape for each sub-beam. Dose depositions along the beam path were determined using a look-up table (LUT). Data for LUT generation were derived from MC simulations in water using GATE 6.1. For materials other than water, dose depositions were calculated by the algorithm using water-equivalent depth scaling. Lateral beam spreading caused by multiple scattering has been accounted for by implementing a non-local scattering formula developed by Gottschalk. A new nuclear correction was modelled using a Voigt function and implemented by a LUT approach. Validation simulations have been performed using a phantom filled with homogeneous materials or heterogeneous slabs of up to 3 cm. The beams were incident perpendicular to the phantoms surface with initial particle energies ranging from 50 to 250 MeV/A with a total number of 10{sup 7} ions per beam. For comparison a special evaluation software was developed calculating the gamma indices for dose distributions. Results: In homogeneous phantoms, maximum range deviations between PB and MC of less than 1.1% and differences in the width of the distal energy falloff of the Bragg-Peak from 80% to 20% of less than 0.1 mm were found. Heterogeneous phantoms using layered slabs satisfied a {gamma}-index criterion of 2%/2mm of the local value except for some single voxels. For more complex phantoms using laterally arranged bone-air slabs, the {gamma}-index criterion was exceeded in some areas giving a maximum {gamma}-index of 1.75 and 4.9% of the voxels showed {gamma}-index values larger than one. The calculation precision of the presented algorithm was considered to be sufficient for clinical practice. Although only data for helium beams was presented, the performance of the pencil beam algorithm for proton beams was comparable. Conclusions: The pencil beam algorithm developed for helium ions presents a suitable tool for dose calculations. Its calculation speed was evaluated to be similar to other published pencil beam algorithms. The flexible design allows easy customization of measured depth-dose distributions and use of varying beam profiles, thus making it a promising candidate for integration into future treatment planning systems. Current work in progress deals with RBE effects of helium ions to complete the model.
Fuchs, Hermann; Stroebele, Julia; Schreiner, Thomas; Hirtl, Albert; Georg, Dietmar [Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, 1090 Vienna (Austria); Department of Radiation Oncology, Medical University of Vienna/AKH Vienna, 1090 Vienna (Austria) and Comprehensive Cancer Center, Medical University of Vienna/AKH Vienna, 1090 Vienna (Aus